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* In ''Literature/AscendanceOfABookworm'' Myne has staggering amounts of magical power in her body, but commoners have no way to release it. As such, it builds up in her body and puts her in life threatening danger. The only thing she can do with her magic without help is release it in aura form when she gets upset, which causes great emotional distress to anyone she's upset ''with.''
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* ''Literature/OfFireAndStars'': Dennaleia doesn't fully control her magic, so when Mare (whom Dennaleia's attracted to) is wounded by an assassin, this results in her inadvertently burning him from the inside out as it's unleashed.
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PowerIncontinence in literature.
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PowerIncontinence in literature.{{Literature}}.
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* ''Literature/MoongobbleAndMe'': Felicity the Finder, a witch in book 2, is painfully shy and tends to lose control of her powers when she gets upset.
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* ''Literature/{{Sunshine}}'': People with [[PlayingWithFire fire magic]] make poor firefighters, despite literally being in their element, because fires become stronger and more enthusiastic in their presence.
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** ''Film/FantasticBeastsAndWhereToFindThem'' reveals that young wizards who try to suppress their powers out of fear will manifest a dark magical force called an Obscurus that causes havoc and destruction. Sadly, this takes such a toll on the wizard that there's never been a case of such a wizard surviving past the age of ten. [[spoiler: Except Credence Barebone.]]
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** ''Film/FantasticBeastsAndWhereToFindThem'' reveals that young wizards who try to suppress their powers out of fear will manifest a dark magical force called an Obscurus that causes havoc and destruction. Sadly, this takes such a toll on the wizard that there's never been a case of such a wizard surviving past the age of ten. [[spoiler: Except Credence Barebone.Barebone, AKA Aurelius Dumbledore, and his Aunt Ariana.]]
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%% This page has been alphabetized. Please add new examples in the correct order.
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%% This page has been alphabetized. Please add new examples in the correct order. Thanks!
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* Henry, from ''Literature/TheTimeTravelersWife'', has no control over his time-jumping ability, which complicates his life as one might imagine, and also leads to some NightmareFuel when [[spoiler: his offspring inherit the ability - while still in the womb, with usually fatal results]].
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* Henry, from ''Literature/TheTimeTravelersWife'', has no control over his time-jumping ability, which complicates his life as one might imagine, and also leads to some NightmareFuel when [[spoiler: his offspring inherit the ability - -- while still in the womb, with usually fatal results]].
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* Peter from ''Literature/PilgrennonsChildren'' is unable to control the BrainComputerInterface that was installed when he was a fetus. He needs to wear a viking helmet most of the time to stop him from destroying every computer around.
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** ''Film/FantasticBeastsAndWhereToFindThem'' reveals that young wizards who try to suppress their powers out of fear will manifest a dark magical force called an Obscurus that causes havoc and destruction. Sadly, this takes such a toll on the wizard that there's never been a case of such a wizard surviving past the age of ten. [[spoiler: Except Credence Barebone.]]
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* In ''Literature/TheSecretsOfDrearcliffGrangeSchool'' and ''Literature/TheHauntingOfDrearcliffGrangeSchool'', Harper and Dyall are outcasts because their uncontrollable powers have unpleasant effects on anyone around them. Dyall's power causes headaches, loss of concentration, and patches of amnesia; Harper "breathes in" the life-energy of others, and nearly killed her own mother as a baby. Amy, the protagonist, has a few incidents of her power activating unintentionally when she's stressed, but they tend to involve nothing more than a bit of embarrassment as her power is levitation.
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* In ''Literature/TheSecretsOfDrearcliffGrangeSchool'' and ''Literature/TheHauntingOfDrearcliffGrangeSchool'', Harper and Dyall are outcasts because their uncontrollable powers have unpleasant effects on anyone around them. Dyall's power causes headaches, loss of concentration, and patches of amnesia; Harper "breathes in" the life-energy of others, and nearly killed her own mother as a baby. Amy, the protagonist, has a few incidents of her power activating unintentionally when she's stressed, but they tend to involve nothing more than a bit of embarrassment as her power is levitation. The Appendix to the second book reveals that [[spoiler: Dyall's Secret is "You know how to turn down your talent"; she just doesn't.]]
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** In a mental institution for parahumans is a girl by the name of Sveta, who was turned into [[BodyHorror an inky blob with wire tentacles]]. She's in said facility because she cannot control said tendrils (which can ''bend steel'') and [[AccidentalMurder accidently has a bodycount reaching into the double digits]]. [[spoiler:By ''Ward'' her situation and appendage control has significantly improved, but her body remains just as dangerous.]]
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** In a mental institution for parahumans is a girl by the name of Sveta, who was turned into [[BodyHorror an inky blob with wire tentacles]]. She's in said facility because she cannot control said her tendrils (which can ''bend steel'') and [[AccidentalMurder accidently has a bodycount an accidental body count reaching into the double digits]]. [[spoiler:By ''Ward'' her situation and appendage control has significantly improved, but her body remains just as dangerous.]]
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** Several character who can channel (most notably Rand) had trouble keeping a lid on their powers when they were learning the basics. And thanks to a nasty curse, males who learn how to channel end up getting power incontinence all over again since WithGreatPowerComesGreatInsanity.
** Aes Sedai can muffle their psychic link with their Warders, but the Warders apparently have no such ability and must rely on the Aes Sedai to do it for them. When [[spoiler: Rand and Elayne finally]] have sex late in the series after several other people are bonded to them, they forget to muffle the bond, resulting in much embarrassment and a near ass-kicking by [[spoiler:Birgitte, Elayne's]] other Warder. It's not so much they forget, they (or at least [[spoiler:Elayne]]) DO muffle it at first but they were um... occupied after that and didn't maintain it.
** Aes Sedai can muffle their psychic link with their Warders, but the Warders apparently have no such ability and must rely on the Aes Sedai to do it for them. When [[spoiler: Rand and Elayne finally]] have sex late in the series after several other people are bonded to them, they forget to muffle the bond, resulting in much embarrassment and a near ass-kicking by [[spoiler:Birgitte, Elayne's]] other Warder. It's not so much they forget, they (or at least [[spoiler:Elayne]]) DO muffle it at first but they were um... occupied after that and didn't maintain it.
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** Several character characters who can channel (most notably Rand) had trouble keeping a lid on their powers when they were learning the basics. And thanks to a nasty curse, males who learn how to channel end up getting power incontinence all over again since WithGreatPowerComesGreatInsanity.
** Aes Sedai can muffle their psychic link with their Warders, but the Warders apparently have no such ability and must rely on the Aes Sedai to do it for them. When [[spoiler: Rand and Elayne finally]] have sex late in the series after several other people are bonded to them, they forget to muffle the bond, resulting in much embarrassment and a near ass-kicking by [[spoiler:Birgitte, Elayne's]] other Warder. It's not so much theyforget, forgot, they (or at least [[spoiler:Elayne]]) DO ''did'' muffle it at first but they were um... occupied after that and didn't maintain it.
** Aes Sedai can muffle their psychic link with their Warders, but the Warders apparently have no such ability and must rely on the Aes Sedai to do it for them. When [[spoiler: Rand and Elayne finally]] have sex late in the series after several other people are bonded to them, they forget to muffle the bond, resulting in much embarrassment and a near ass-kicking by [[spoiler:Birgitte, Elayne's]] other Warder. It's not so much they
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** Canary has the ability to make people suggestible through her songs told her ex to "go fuck himself" without realizing she was affecting him. [[ExactWords He did]]. Fatally.
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** Canary Canary, who has the ability to make people suggestible through her songs songs, once told her ex to "go fuck himself" without realizing she was affecting him. [[ExactWords He did]]. Fatally.
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** In a mental institution for parahumans is a girl by the name of Sveta, who was turned into [[BodyHorror an inky blob with wire tentacles]]. She's in said facility because said cannot control said tendrils (which can ''bend steal'') and [[AccidentalMurder accidently has a bodycount reaching into the double digits]]. [[spoiler:By ''Ward'' her situation and appendage control has significantly improved, but her body remains just as dangerous.]]
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** In a mental institution for parahumans is a girl by the name of Sveta, who was turned into [[BodyHorror an inky blob with wire tentacles]]. She's in said facility because said she cannot control said tendrils (which can ''bend steal'') steel'') and [[AccidentalMurder accidently has a bodycount reaching into the double digits]]. [[spoiler:By ''Ward'' her situation and appendage control has significantly improved, but her body remains just as dangerous.]] ]]
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** In a mental institution for parahumans is a girl by the name of Sveta, who was turned into [[BodyHorror an inky blob with wire tentacles]]. She's in said facility because said cannot control said tendrils (which can ''bend steal'') and [[AccidentalMurder accidently has a bodycount reaching into the double digits]]. [[spoiler:By ''Ward'' her situation and appendage control has significantly improved, but her body remains just as dangerous.]]
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** In a later book, Marco has a similar problem with controlling his morphing, due to his emotional turmoil over his dad remarrying.
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* ''Literature/InCryptid'': Artie is an incubus, who naturally gives off [[LivingAphrodisiac pheromones that attract humans of the opposite sex]] (other than blood relatives, who are immune). This is a problem, since Artie has very little control over his pheromones, to the point that he's a {{Hikikomori}} by necessity. If he ever leaves the house, he wears cologne strong enough to destroy the sense of smell of anyone in a ten-foot radius, since otherwise his pheromones would be overpowering to any female he's not related to. His succubus sister Elsie has a milder form of this problem, as her pheromones [[IDidntMeanToTurnYouOn unintentionally attract men to her]] when she's actually interested in their girlfriends.
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* [[TheHeroine Ishtar]] from the ''Literature/{{Kadingir}}'' series has this problem when she falls through a dimensional portal and arrives in Ki. Her [[PsychicPowers latent abilities]] awaken, and she suddenly can hear the thoughts of [[BirdPeople all]] [[CatFolk the]] [[FishPeople bizarre]] [[LizardFolk people]] she comes across... while being in the most crowded market in town. The constant and increasingly louder hurricane of words in a language she can't understand nearly drives her insane, but fortunately Galam [[PsychicBlockDefense steps in to help]].
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crosswicking
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%%* This is a big plot point in ''[[Literature/TheBlackMagicianTrilogy Magician's Apprentice]]'' by Creator/TrudiCanavan.
* In Fred Saberhagen's ''Literature/BooksOfSwords'' series:
* In Fred Saberhagen's ''Literature/BooksOfSwords'' series:
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* Creator/IsaacAsimov and Creator/JanetAsimov's ''Literature/TheNorbyChronicles'': Despite having amazing abilities, Norby isn't always certain how to use them. In the first novel, he explains to Jeff that he ''knows'' how to travel in [[SubspaceOrHyperspace hyperspace]], but doesn't know ''how'' to do it, much like you know how to raise your arm, but probably don't know how the message gets there from your brain, which muscles are pulling and which ones are relaxing, or how the bones shift with your ligaments.
%%*This Creator/TrudiCanavan's ''Literature/TheBlackMagicianTrilogy '': In ''Magician's Apprentice'', this is a big plot point in ''[[Literature/TheBlackMagicianTrilogy Magician's Apprentice]]'' by Creator/TrudiCanavan.
point. %%What is a plot point?
* InFred Saberhagen's Creator/FredSaberhagen's ''Literature/BooksOfSwords'' series:
%%*
* In
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* Many of the mutants in ''Literature/{{Gone}}'' have this. Sam accidentally [[FrickinLaserBeams burned his step-father's hand off]]. Bette [[LightEmUp made her hands glow]] and then couldn't get them to stop glowing. Hunter accidentally killed one of his friends when he becomes a human microwave. Astrid and Diana seem to [[WhatKindOfLamePowerIsHeartAnyway "read" people]] by touching their hands, whether they want to or not. Duck accidentally sunk through the bottom of a swimming pool. Lana got lucky and [[HealingHands healed herself and her wounded dog]] without realizing it. Orsay sees people's dreams whenever she's near a sleeping person, no matter who it is, which causes some NightmareFuel when she gets stuck in Drake's head. Jack has [[SuperStrength accidentally broken a lot of things]]. Bug spends most of his time [[{{Invisibility}} invisible]]. Brianna gets sick and ends up coughing in SuperSpeed. A lot of the more powerful characters eventually learn to use their powers, but not all. It seems that control is one of the variables in the RandomPowerRanking.
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* Many of the mutants in ''Literature/{{Gone}}'' have this. Sam accidentally [[FrickinLaserBeams [[EnergyWeapon burned his step-father's hand off]]. Bette [[LightEmUp made her hands glow]] and then couldn't get them to stop glowing. Hunter accidentally killed one of his friends when he becomes a human microwave. Astrid and Diana seem to [[WhatKindOfLamePowerIsHeartAnyway "read" people]] by touching their hands, whether they want to or not. Duck accidentally sunk through the bottom of a swimming pool. Lana got lucky and [[HealingHands healed herself and her wounded dog]] without realizing it. Orsay sees people's dreams whenever she's near a sleeping person, no matter who it is, which causes some NightmareFuel when she gets stuck in Drake's head. Jack has [[SuperStrength accidentally broken a lot of things]]. Bug spends most of his time [[{{Invisibility}} invisible]]. Brianna gets sick and ends up coughing in SuperSpeed. A lot of the more powerful characters eventually learn to use their powers, but not all. It seems that control is one of the variables in the RandomPowerRanking.
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** In ''Discworld/UnseenAcademicals'', a side-story concerns the first Medusa to be employed by the Ankh-Morpork City Watch. The first gorgon policewoman works out just fine -- until her sunglasses get knocked off and she inadvertently turns a few people into stone.
** In ''Discworld/EqualRites'', Eskarina's innate magical abilities tend to leak out when she's under emotional stress.
** In ''Discworld/EqualRites'', Eskarina's innate magical abilities tend to leak out when she's under emotional stress.
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** In ''Discworld/UnseenAcademicals'', ''Literature/UnseenAcademicals'', a side-story concerns the first Medusa to be employed by the Ankh-Morpork City Watch. The first gorgon policewoman works out just fine -- until her sunglasses get knocked off and she inadvertently turns a few people into stone.
** In''Discworld/EqualRites'', ''Literature/EqualRites'', Eskarina's innate magical abilities tend to leak out when she's under emotional stress.
** In
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** The sequel, ''Literature/{{Ward}}'', reveals something disturbing but also enlightening about parahumans: [[spoiler:since the various superpowers are designed to cause conflict, they actively try to do so. Parahumans who use their powers in battle tend to have good control, but parahumans who try to find nonviolent uses, or who try to simply not use their power at all, find their power going more and more out of their control. This is one reason Amy's power is so unstable: she's been using it just to heal people, rather than, say, unleash biological superweapons that kill millions. Her power is actively sabotaging her control in order to cause conflict despite her own refusal to do so.]]
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* A number of characters in ''Literature/{{Worm}}'' suffer from this to one degree or another. A woman with the ability to make people suggestible through her songs told her ex to "go fuck himself" without realizing she was affecting him. [[ExactWords He did]]. Fatally. Another example is Panacea, who accidentally [[spoiler:brainwashed her foster sister into being in love with her]].
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* A number of characters in ''Literature/{{Worm}}'' suffer from this to one degree or another. A woman with
** Canary has the ability to make people suggestible through her songs told her ex to "go fuck himself" without realizing she was affecting him. [[ExactWords He did]].Fatally. Another example is Panacea, who Fatally.
** Panacea accidentally [[spoiler:brainwashed her foster sister into being in love withher]].her]].
** Ash Beast is an African parahuman whose power constantly generates an everlasting explosion around him. While this [[RequiredSecondaryPowers doesn't hurt him directly]], it does mean he's been reduced to wandering the African wilds with no human contact in years.
** Taylor herself runs into this while [[spoiler:incarcerated after surrendering to the PRT. She isn't allowed to use her power without permission, but even if she isn't directly commanding the bugs around her, she can still sense everything they're doing... which, she points out, is ''really gross'' when it comes to the pubic lice other prisoners in the jail suffer from.]]
** Canary has the ability to make people suggestible through her songs told her ex to "go fuck himself" without realizing she was affecting him. [[ExactWords He did]].
** Panacea accidentally [[spoiler:brainwashed her foster sister into being in love with
** Ash Beast is an African parahuman whose power constantly generates an everlasting explosion around him. While this [[RequiredSecondaryPowers doesn't hurt him directly]], it does mean he's been reduced to wandering the African wilds with no human contact in years.
** Taylor herself runs into this while [[spoiler:incarcerated after surrendering to the PRT. She isn't allowed to use her power without permission, but even if she isn't directly commanding the bugs around her, she can still sense everything they're doing... which, she points out, is ''really gross'' when it comes to the pubic lice other prisoners in the jail suffer from.]]
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* ''Literature/CallahansCrosstimeSaloon'' features the Lucky Duck, who has improbable events happen around (and to) himself. [[spoiler:He's a [[TheFairFolk Fair Folk]] halfbreed, and he didn't get the half that allows him to control his powers.]] Fortunately for those around him, this luck, while extreme, tends to cancel itself out.
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* In ''Literature/TheSecretsOfDrearcliffGrangeSchool'', Harper and Dyall are outcasts because their uncontrollable powers have unpleasant effects on anyone around them. Dyall's power causes headaches, loss of concentration, and patches of amnesia; Harper "breathes in" the life-energy of others, and is implied to have nearly killed her own mother as a baby. Amy, the protagonist, has a few incidents of her power activating unintentionally when she's stressed, but they tend to involve nothing more than a bit of embarrassment as her power is levitation.
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* In ''Literature/TheSecretsOfDrearcliffGrangeSchool'', ''Literature/TheSecretsOfDrearcliffGrangeSchool'' and ''Literature/TheHauntingOfDrearcliffGrangeSchool'', Harper and Dyall are outcasts because their uncontrollable powers have unpleasant effects on anyone around them. Dyall's power causes headaches, loss of concentration, and patches of amnesia; Harper "breathes in" the life-energy of others, and is implied to have nearly killed her own mother as a baby. Amy, the protagonist, has a few incidents of her power activating unintentionally when she's stressed, but they tend to involve nothing more than a bit of embarrassment as her power is levitation.
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* In ''Literature/TheSecretsOfDrearcliffGrangeSchool'', Harper and Dyall are outcasts because their uncontrollable powers have unpleasant effects on anyone around them. Dyall's power causes headaches, loss of concentration, and patches of amnesia; Harper "breathes in" the life-energy of others, and is implied to have nearly killed her own mother as a baby. Amy, the protagonist, has a few incidents of her power activating unintentionally when she's stressed, but they tend to involve nothing more than a bit of embarrassment as her power is levitation.
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* ''Literature/TheRiseOfKyoshi'': In a world where ElementalPowers are commonplace, most cultures are content to allow children to discover those powers at their own pace. The primary exception is the Fire Nation, which tests children for potential as soon as possible (often before they can walk), because they can't have random kids suddenly spewing fire everywhere.
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* Creator/AnnLeckie's ''Literature/TheRavenTower'': Whenever a PhysicalGod makes a statement that is not currently true, its RealityWarping ''makes'' it be true, which can drain or even kill the god if it doesn't have enough power to make the change.
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* Creator/AnnLeckie's ''Literature/TheRavenTower'': Whenever a PhysicalGod makes a statement that is not currently true, its RealityWarping ''makes'' it be true, which can drain or even kill the god if it doesn't have enough power to make the change. [[spoiler:The Raven is killed by overspending its power trying to kill a pair of gods that are many, ''many'' [[TimeAbyss times older than he is]].]]
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* Creator/AnnLeckie's ''Literature/TheRavenTower'': Whenever a PhysicalGod makes a statement that is not currently true, its RealityWarping ''makes'' it be true, which can drain or even kill the god if it doesn't have enough power to make the change.
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* Several examples in ''Literature/TheWitchlands'':
** Safi's [[LivingLieDetector Truthwitchery]] is always on, whispering ''true'' or ''false'' whether she wants to know or not.
** After [[spoiler:Iseult]] [[FateWorseThanDeath Cleaves]] a Firewitch, she finds herself starting small fires with her mind whenever he temper flares up.
** Safi's [[LivingLieDetector Truthwitchery]] is always on, whispering ''true'' or ''false'' whether she wants to know or not.
** After [[spoiler:Iseult]] [[FateWorseThanDeath Cleaves]] a Firewitch, she finds herself starting small fires with her mind whenever he temper flares up.
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%% This page has been alphabetized. Please add new examples in the correct order.
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* Orrec's problem in ''Gifts,'' the first in the ''Literature/AnnalsOfTheWesternShore''. He has no idea when he's actually activated his DeadlyGaze, making him a danger to everyone around him. After destroying an entire hillside and thinking he destroyed his father too, he goes blindfold for everyone's protection. [[spoiler:It turns out the real reason he can't tell when he's using his power is because ''he has no power''. His father was just unmaking things from just behind him every time.]]
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* In ''Literature/{{Animorphs}}'', after Rachel acquires a crocodile morph, she morphs involuntarily whenever she is feeling strong emotion. There are two reasons why this is a bad thing. The first is that houses are not built to support the weight of an adult African elephant. The second is that when you have a conspiracy of mind-controlling aliens whose only obstacles to taking over the world are the morph-capable "Andalite bandits", it is not a good idea to reveal that you can turn into animals. It turns out that Rachel is "allergic" to the crocodile morph, and once she expels it, she goes back to normal. Except for the fact that she is now standing next to a very confused crocodile...
* Orrec's problem in''Gifts,'' ''Gifts'', the first in the ''Literature/AnnalsOfTheWesternShore''. He has no idea when he's actually activated his DeadlyGaze, making him a danger to everyone around him. After destroying an entire hillside and thinking he destroyed his father too, he goes blindfold for everyone's protection. [[spoiler:It turns out the real reason he can't tell when he's using his power is because ''he has no power''. His father was just unmaking things from just behind him every time.]]]]
%%* This is a big plot point in ''[[Literature/TheBlackMagicianTrilogy Magician's Apprentice]]'' by Creator/TrudiCanavan.
* Orrec's problem in
%%* This is a big plot point in ''[[Literature/TheBlackMagicianTrilogy Magician's Apprentice]]'' by Creator/TrudiCanavan.
* In the prequel trilogy, his problem was that [[HowDoIShotWeb he couldn't figure out how to use his magical powers.]] But in ''The Second Literature/ChroniclesOfThomasCovenant'', the title character has the opposite problem: lashing out with increasingly ferocious discharges every time he's in pain (which, given that he is a character in a Stephen Donaldson novel, is ''All. The. Time.'') Towards the end of the trilogy, he's in danger of destroying the entire fantasy world, which was of course [[BigBad Lord]] [[NamesToRunAwayFromReallyFast Foul's]] plan all along.
* ''Literature/{{Circleverse}}'':
** Trisana Chandler was abandoned by her family due to the unnatural weather phenomena that tended to occur around her, which was caused by her magic getting away from her. Given her power tends to be linked to negative emotions, the situation only got worse with time.
** Mages in general in the series have minor ''Harry Potter''-style leakage until they learn to control it. The worst affected character is Zhegorz, a man who was assumed to be plain old insane for having visions and hearing voices and was locked up in a BedlamHouse until he really did develop paranoid schizophrenia or something like it.
* ''Literature/{{Circleverse}}'':
** Trisana Chandler was abandoned by her family due to the unnatural weather phenomena that tended to occur around her, which was caused by her magic getting away from her. Given her power tends to be linked to negative emotions, the situation only got worse with time.
** Mages in general in the series have minor ''Harry Potter''-style leakage until they learn to control it. The worst affected character is Zhegorz, a man who was assumed to be plain old insane for having visions and hearing voices and was locked up in a BedlamHouse until he really did develop paranoid schizophrenia or something like it.
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* ''Literature/LesEnfantsDePromethee'' begins when Mathias, a young [[TheChosenMany Pillar]], loses [[BlowYouAway control of the wind]] and crashes an airplane at [[WizardingSchool the Academy]]. It gets worse when [[AntiMagic a Canceller]] gets a similar case of PowerIncontinence and causes every Pillar in Primville to lose their power at the same time, causing Red Tuesday. [[FromBadToWorse And then]] [[spoiler: it turns out that Prometheus is affected with PowerIncontinence, and it becomes apparent that every Pillar is doomed to lose their power eventually.]]
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* Discussed in ''Literature/TheDresdenFiles'', where just about all mortal wizards have [[WalkingTechbane difficulty using technology]] because their magic "leaks" out into the surrounding environment, generating a "Murphyonic field" (as one character describes it) that disrupts delicate electronics. Simply turning on a phone or computer in the presence of a wizard will cause it to go haywire, and if a wizard is powerful, emotional, or ''both'', it can cause an entire building's worth of electronics to blow out.
** We find out in ''Literature/ColdDays'', this all applies only to mortal magic users, like Harry in the Dresdenverse. Sidhe are quite capable of slinging powerful magic and using high technology at the same time.
** Queen Mab also spends an entire book at one point refusing, for the most part, to speak. All of her interaction with Harry is done through her servant Grimalkin, who speaks for her while she remains present but silent. It turns out that this is because her fury at the time over a hostile attack on her fortress ran so deep that her mere ''voice'' could prove lethal to mortals, and the one time she does address Harry in her own voice, after he names one of the perpetrators of that attack, it leaves him with a headache and blood coming from his ears.
* When Colin wakes up after [[CoolStarship Dahak's]] "minor improvements" to his body in the first ''Literature/EmpireFromTheAshes'' book, he very nearly goes ''insane'' from the sensory overload and sensation of an alien presence in his mind. It takes some extended TrainingFromHell before Colin gets completely used to his new powers.
* ''Literature/LesEnfantsDePromethee'' begins when Mathias, a young [[TheChosenMany Pillar]], loses [[BlowYouAway control of the wind]] and crashes an airplane at [[WizardingSchool the Academy]]. It gets worse when [[AntiMagic a Canceller]] gets a similar case of PowerIncontinence and causes every Pillar in Primville to lose their power at the same time, causing Red Tuesday. [[FromBadToWorse And then]] [[spoiler: it turns out that Prometheus is affected with PowerIncontinence, and it becomes apparent that every Pillar is doomed to lose their power eventually.]] ]]
* Gazo Kovacs is a victim of this in the ''Literature/EvilGeniusTrilogy'': he possesses a powerful and seemingly uncontrollable stench that can knock out just about any human being within thirty paces, and has to wear a hazmat suit to stop it from harming those around him. However, by the third novel, he's managed to get his power under control through various forms of therapy, and is now capable of using it to save lives.
* In ''Literature/TheEyesOfKidMidas'', Kevin Midas gradually loses control of his RealityWarping powers, causing [[RealityBleed his subconscious thoughts to bleed into reality]].
** We find out in ''Literature/ColdDays'', this all applies only to mortal magic users, like Harry in the Dresdenverse. Sidhe are quite capable of slinging powerful magic and using high technology at the same time.
** Queen Mab also spends an entire book at one point refusing, for the most part, to speak. All of her interaction with Harry is done through her servant Grimalkin, who speaks for her while she remains present but silent. It turns out that this is because her fury at the time over a hostile attack on her fortress ran so deep that her mere ''voice'' could prove lethal to mortals, and the one time she does address Harry in her own voice, after he names one of the perpetrators of that attack, it leaves him with a headache and blood coming from his ears.
* When Colin wakes up after [[CoolStarship Dahak's]] "minor improvements" to his body in the first ''Literature/EmpireFromTheAshes'' book, he very nearly goes ''insane'' from the sensory overload and sensation of an alien presence in his mind. It takes some extended TrainingFromHell before Colin gets completely used to his new powers.
* ''Literature/LesEnfantsDePromethee'' begins when Mathias, a young [[TheChosenMany Pillar]], loses [[BlowYouAway control of the wind]] and crashes an airplane at [[WizardingSchool the Academy]]. It gets worse when [[AntiMagic a Canceller]] gets a similar case of PowerIncontinence and causes every Pillar in Primville to lose their power at the same time, causing Red Tuesday. [[FromBadToWorse And then]] [[spoiler: it turns out that Prometheus is affected with PowerIncontinence, and it becomes apparent that every Pillar is doomed to lose their power eventually.
* Gazo Kovacs is a victim of this in the ''Literature/EvilGeniusTrilogy'': he possesses a powerful and seemingly uncontrollable stench that can knock out just about any human being within thirty paces, and has to wear a hazmat suit to stop it from harming those around him. However, by the third novel, he's managed to get his power under control through various forms of therapy, and is now capable of using it to save lives.
* In ''Literature/TheEyesOfKidMidas'', Kevin Midas gradually loses control of his RealityWarping powers, causing [[RealityBleed his subconscious thoughts to bleed into reality]].
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* Rae, the main character of the series ''Literature/{{Fingerprints}}'', can't control her PsychicPowers, and the sudden onslaught of other people's thoughts when her ability first manifests causes her to freak out in public and get committed to a mental institution for a year. She later starts putting wax on her fingers as a sort of makeshift PowerLimiter. There's one other character who also can't turn off their psychic ability, but any difficulties they might have aren't directly addressed in the story.
* In Creator/StephenKing's ''Literature/{{Firestarter}}'', Charlie [=McGee=]'s pyrokinetic power first arose when she was a infant, and more than once it nearly kills her and her parents; as she grows older, she does gain some control over it, but this doesn't stop the GovernmentConspiracy hunting her from fearing that she could become a PersonOfMassDestruction unless she's given the ''[[TykeBomb appropriate]]'' training. It's also worth noting that while she gains the control necessary to avoid starting fires when she doesn't want to, it's very hard for her to stop once she does start one.
* This is the cause of [[spoiler:karma demons]] in ''Literature/FromTheNewWorld''. They lose subconscious control of their power, allowing it to warp their surroundings unabated, [[RealityWarpingIsNotAToy leading to very devastating results]].
* Many of the mutants in ''Literature/{{Gone}}'' have this. Sam accidentally [[FrickinLaserBeams burned his step-father's hand off]]. Bette [[LightEmUp made her hands glow]] and then couldn't get them to stop glowing. Hunter accidentally killed one of his friends when he becomes a human microwave. Astrid and Diana seem to [[WhatKindOfLamePowerIsHeartAnyway "read" people]] by touching their hands, whether they want to or not. Duck accidentally sunk through the bottom of a swimming pool. Lana got lucky and [[HealingHands healed herself and her wounded dog]] without realizing it. Orsay sees people's dreams whenever she's near a sleeping person, no matter who it is, which causes some NightmareFuel when she gets stuck in Drake's head. Jack has [[SuperStrength accidentally broken a lot of things]]. Bug spends most of his time [[{{Invisibility}} invisible]]. Brianna gets sick and ends up coughing in SuperSpeed. A lot of the more powerful characters eventually learn to use their powers, but not all. It seems that control is one of the variables in the RandomPowerRanking.
* In the ''Franchise/{{Halo}}'' novel ''Literature/HaloTheFallOfReach'', it's revealed that if a non-[[SuperSoldier Spartan]] tries to utilize the [[PoweredArmor MJOLNIR armor]], they will literally break themselves due to their inability to control their new super-speed and super-strength.
* ''Literature/HarryPotter''
** The title character's cursed scar that gives him insight into Voldemort's thoughts.
** This is what usually happens to child wizards -- they make strange things happen when they're angry or scared. This is evidenced by Harry removing the protective glass keeping a large python inside its cage at the zoo, which made Dudley tumble into said cage. Teenage wizards experience a magical growth spurt along with their physical growth spurt, and are especially likely to cause accidents during this time.
** This was the reason why [[spoiler:Ariana Dumbledore]] was locked up at home. [[YouDoNOTWantToKnow After whatever-those-boys did to her]] she was unable to control her magic and was close to blowing up the house every other day.
* ''Literature/HeraldsOfValdemar'':
** In ''Brightly Burning'', Lavan Firestorm's gift of Firestarting was provoked into action by bullies at the Merchant's School. He can't control it himself. His Companion [[spoiler:and lifebond]], Kalira, controls his power. [[spoiler:When Kalira is killed in the final battle with Karse, Lavan has neither the means nor the desire to control his gift further. He incinerates the entire region, including the Karsite army, the surrounding forest and grounds, and himself.]]
** This can be an issue for many Gifted until they are taught how to control themselves; in the Last Herald Mage trilogy, [[spoiler:Vanyel Ashkevron]] needs to be ''removed from the city for everyone's safety'' after suddenly and traumatically developing his strong abilities, and in the Arrows trilogy [[spoiler:Talia]] loses control of her mental powers even after she's supposedly been taught, because of some misunderstandings regarding her training.
* Power Incontinence is the entire point of ''Literature/HiddenTalents'' by David Lubar, where six kids meet at a school for delinquents only to discover they have latent psychic powers that caused their apparent behavior problems. By the end of the first book, they all have better control over their powers [[TheWoobie except Lucky]].
** "Lucky" can't stop hearing voices from lost objects. In the sequel, [[spoiler:[[NightmareFuel he goes crazy from this and ends up in a hospital]], but gets better with the help of some AppliedPhlebotinum to suppress his powers]].
** [[JerkWithAHeartOfGold Martin]] [[TheEmpath can sense]] {{Berserk Button}}s.
** "[[MeaningfulName Flinch]]" is [[SpiderSense precognitive]] which makes him jumpy and a distraction in the classroom (but excellent at sports and stand-up comedy).
** "[[MeaningfulName Torchie]]" [[PlayingWithFire sets things on fire]].
** "[[MeaningfulName Trash]]" unconsciously [[MindOverMatter flings things around or just plain wrecks them]].
** "[[MeaningfulName Cheater]]" unwittingly copies other people's test answers word-for-word, because he's telepathic and [[ParanoiaFuel can't tell which thoughts aren't his own]].
* In Creator/StephenKing's ''Literature/{{Firestarter}}'', Charlie [=McGee=]'s pyrokinetic power first arose when she was a infant, and more than once it nearly kills her and her parents; as she grows older, she does gain some control over it, but this doesn't stop the GovernmentConspiracy hunting her from fearing that she could become a PersonOfMassDestruction unless she's given the ''[[TykeBomb appropriate]]'' training. It's also worth noting that while she gains the control necessary to avoid starting fires when she doesn't want to, it's very hard for her to stop once she does start one.
* This is the cause of [[spoiler:karma demons]] in ''Literature/FromTheNewWorld''. They lose subconscious control of their power, allowing it to warp their surroundings unabated, [[RealityWarpingIsNotAToy leading to very devastating results]].
* Many of the mutants in ''Literature/{{Gone}}'' have this. Sam accidentally [[FrickinLaserBeams burned his step-father's hand off]]. Bette [[LightEmUp made her hands glow]] and then couldn't get them to stop glowing. Hunter accidentally killed one of his friends when he becomes a human microwave. Astrid and Diana seem to [[WhatKindOfLamePowerIsHeartAnyway "read" people]] by touching their hands, whether they want to or not. Duck accidentally sunk through the bottom of a swimming pool. Lana got lucky and [[HealingHands healed herself and her wounded dog]] without realizing it. Orsay sees people's dreams whenever she's near a sleeping person, no matter who it is, which causes some NightmareFuel when she gets stuck in Drake's head. Jack has [[SuperStrength accidentally broken a lot of things]]. Bug spends most of his time [[{{Invisibility}} invisible]]. Brianna gets sick and ends up coughing in SuperSpeed. A lot of the more powerful characters eventually learn to use their powers, but not all. It seems that control is one of the variables in the RandomPowerRanking.
* In the ''Franchise/{{Halo}}'' novel ''Literature/HaloTheFallOfReach'', it's revealed that if a non-[[SuperSoldier Spartan]] tries to utilize the [[PoweredArmor MJOLNIR armor]], they will literally break themselves due to their inability to control their new super-speed and super-strength.
* ''Literature/HarryPotter''
** The title character's cursed scar that gives him insight into Voldemort's thoughts.
** This is what usually happens to child wizards -- they make strange things happen when they're angry or scared. This is evidenced by Harry removing the protective glass keeping a large python inside its cage at the zoo, which made Dudley tumble into said cage. Teenage wizards experience a magical growth spurt along with their physical growth spurt, and are especially likely to cause accidents during this time.
** This was the reason why [[spoiler:Ariana Dumbledore]] was locked up at home. [[YouDoNOTWantToKnow After whatever-those-boys did to her]] she was unable to control her magic and was close to blowing up the house every other day.
* ''Literature/HeraldsOfValdemar'':
** In ''Brightly Burning'', Lavan Firestorm's gift of Firestarting was provoked into action by bullies at the Merchant's School. He can't control it himself. His Companion [[spoiler:and lifebond]], Kalira, controls his power. [[spoiler:When Kalira is killed in the final battle with Karse, Lavan has neither the means nor the desire to control his gift further. He incinerates the entire region, including the Karsite army, the surrounding forest and grounds, and himself.]]
** This can be an issue for many Gifted until they are taught how to control themselves; in the Last Herald Mage trilogy, [[spoiler:Vanyel Ashkevron]] needs to be ''removed from the city for everyone's safety'' after suddenly and traumatically developing his strong abilities, and in the Arrows trilogy [[spoiler:Talia]] loses control of her mental powers even after she's supposedly been taught, because of some misunderstandings regarding her training.
* Power Incontinence is the entire point of ''Literature/HiddenTalents'' by David Lubar, where six kids meet at a school for delinquents only to discover they have latent psychic powers that caused their apparent behavior problems. By the end of the first book, they all have better control over their powers [[TheWoobie except Lucky]].
** "Lucky" can't stop hearing voices from lost objects. In the sequel, [[spoiler:[[NightmareFuel he goes crazy from this and ends up in a hospital]], but gets better with the help of some AppliedPhlebotinum to suppress his powers]].
** [[JerkWithAHeartOfGold Martin]] [[TheEmpath can sense]] {{Berserk Button}}s.
** "[[MeaningfulName Flinch]]" is [[SpiderSense precognitive]] which makes him jumpy and a distraction in the classroom (but excellent at sports and stand-up comedy).
** "[[MeaningfulName Torchie]]" [[PlayingWithFire sets things on fire]].
** "[[MeaningfulName Trash]]" unconsciously [[MindOverMatter flings things around or just plain wrecks them]].
** "[[MeaningfulName Cheater]]" unwittingly copies other people's test answers word-for-word, because he's telepathic and [[ParanoiaFuel can't tell which thoughts aren't his own]].
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* Flinx, of Creator/AlanDeanFoster's ''Literature/HumanxCommonwealth'' series, has a strong [[TheEmpath empathic]] talent that turns itself on and off at seemingly random intervals. While the ability grows more sensitive and powerful over the years, it's still maddeningly unpredictable. In addition, when sorely provoked he sometimes erupts in [[SuperpowerMeltdown uncontrolled telekinetic detonations]], making him a PersonOfMassDestruction.
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* In ''Literature/TheLegendsOfEthshar'' universe warlocks experience this with increasing severity as they develop their powers. Unlike other magical schools, warlocks rely simply on exerting their own will to bend reality; the source of their power does not require bargains, prayers, or rituals to obey them. However, with the passage of time they become increasingly attuned with their powers and so exercise them without conscious thought, often against their own will. This is a bad thing because the more a warlock uses their power, the more they become attuned to the whispers that accompany it. Unless killed naturally, warlocks are eventually drawn to the source of those whispers against their will; the Calling is one of the greatest concerns of their guild.
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* ''Literature/LonelyWerewolfGirl''
** A mild case of this occurs with the fire demons tending to set things alight or shoot sparks when they get emotional.
** Kalix also tends to lose control of her werewolf powers when she transforms, cue UnstoppableRage.
** A mild case of this occurs with the fire demons tending to set things alight or shoot sparks when they get emotional.
** Kalix also tends to lose control of her werewolf powers when she transforms, cue UnstoppableRage.
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* In Creator/ALeeMartinez's ''Literature/{{Monster}},'' the main character of the same name has [[ComboPlatterPowers hundreds of different superpowers, including flight, invulnerability, super-strength, laser-sight, and invisibility]]. Unfortunately, each one is tied to Monster's skin colour, which changes every day: at the beginning of the story, Monster's skin is blue, granting him invulnerability; the next day, it's purple, giving him [[WhatKindOfLamePowerIsHeartAnyway the inability to smell anything.]] However, when he steals the CosmicKeystone from Lotus close to the end of the story, he gains a temporarily measure of control over his power.
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* The Confessors in the ''Literature/SwordOfTruth'' series have to keep conscious control of their power at all times to avoid unleashing it on anyone they touch. Among other things, they are unable to sleep with anyone they don't wish to Confess, as one tends to lose one's control in the throes of passion.
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* Henry, from ''Literature/TheTimeTravelersWife'', has no control over his time-jumping ability, which complicates his life as one might imagine, and also leads to some NightmareFuel when [[spoiler: his offspring inherit the ability - while still in the womb, with usually fatal results]].
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* Janie in Lisa [=McMann=]'s ''[[Literature/TheWakeTrilogy Wake Trilogy]]'' (''Wake, Fade'', and ''Gone''). Janie has the power to be in other people's dreams. The only problem is, she passes out in the real world and she can't control it. She actually almost gets in a car accident because she got sucked into the dream of a kid on a school bus and passes out and nearly hits the bus.
* ''Literature/TheWheelOfTime''
** Mat Cauthon is extremely lucky. Especially in totally random things-like dice. In fact, he wins so much that people frequently suspect him of cheating and he's forced to leave the scene quickly (sometimes, his luck is kind enough to make him lose to avoid this). Anything and anyone he comes across by random selection will turn out to be important, even when he would much rather avoid trouble.
** Several character who can channel (most notably Rand) had trouble keeping a lid on their powers when they were learning the basics. And thanks to a nasty curse, males who learn how to channel end up getting power incontinence all over again since WithGreatPowerComesGreatInsanity.
** Aes Sedai can muffle their psychic link with their Warders, but the Warders apparently have no such ability and must rely on the Aes Sedai to do it for them. When [[spoiler: Rand and Elayne finally]] have sex late in the series after several other people are bonded to them, they forget to muffle the bond, resulting in much embarrassment and a near ass-kicking by [[spoiler:Birgitte, Elayne's]] other Warder. It's not so much they forget, they (or at least [[spoiler:Elayne]]) DO muffle it at first but they were um... occupied after that and didn't maintain it.
* A good number of the Aces and Jokers in ''Literature/WildCards'' have powers that are always on.
** Digger Downs's ability [[spoiler:to identify [[DifferentlyPoweredIndividual Aces]] or well-disguised Jokers by smell]] is always on. But so are most normal [[spoiler:senses]], and they aren't considered incontinent either.
** The Amazing Bubbles' ability to absorb kinetic energy and store it as fat is always on. She can't control losing the weight when she fires the bubbles full of energy either.
** Bloat's Wall, a surrounding mile-wide field of psychic energy that can only be passed by an intense act of will, and can't be shut off. As Bloat grows, the Wall expands (also against his will) until it reaches parts of the mainland, driving out residents.
** Whenever Water Lily as exposed to highly ionized air, she made it "rain". Also whenever she's, um, excited.
* ''Literature/TheWheelOfTime''
** Mat Cauthon is extremely lucky. Especially in totally random things-like dice. In fact, he wins so much that people frequently suspect him of cheating and he's forced to leave the scene quickly (sometimes, his luck is kind enough to make him lose to avoid this). Anything and anyone he comes across by random selection will turn out to be important, even when he would much rather avoid trouble.
** Several character who can channel (most notably Rand) had trouble keeping a lid on their powers when they were learning the basics. And thanks to a nasty curse, males who learn how to channel end up getting power incontinence all over again since WithGreatPowerComesGreatInsanity.
** Aes Sedai can muffle their psychic link with their Warders, but the Warders apparently have no such ability and must rely on the Aes Sedai to do it for them. When [[spoiler: Rand and Elayne finally]] have sex late in the series after several other people are bonded to them, they forget to muffle the bond, resulting in much embarrassment and a near ass-kicking by [[spoiler:Birgitte, Elayne's]] other Warder. It's not so much they forget, they (or at least [[spoiler:Elayne]]) DO muffle it at first but they were um... occupied after that and didn't maintain it.
* A good number of the Aces and Jokers in ''Literature/WildCards'' have powers that are always on.
** Digger Downs's ability [[spoiler:to identify [[DifferentlyPoweredIndividual Aces]] or well-disguised Jokers by smell]] is always on. But so are most normal [[spoiler:senses]], and they aren't considered incontinent either.
** The Amazing Bubbles' ability to absorb kinetic energy and store it as fat is always on. She can't control losing the weight when she fires the bubbles full of energy either.
** Bloat's Wall, a surrounding mile-wide field of psychic energy that can only be passed by an intense act of will, and can't be shut off. As Bloat grows, the Wall expands (also against his will) until it reaches parts of the mainland, driving out residents.
** Whenever Water Lily as exposed to highly ionized air, she made it "rain". Also whenever she's, um, excited.
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* In Fred Saberhagen's ''Literature/BooksOfSwords'' series:
** Many of the powers granted by the Swords are like this. Sightblinder, for example, always disguises its wielder, from friend and foe alike. Soulcutter causes soul-crushing despair in everyone within its area of effect, including the wielder. Townsaver and Shieldbreaker both prevent their wielders from putting down either one, or from running away, once battle is joined; Dragonslicer seems to have a similar issue, although the circumstances under which it activates in the first place are much rarer. The Mindsword, when its blade is exposed but it is not wielded by anyone, generates waves of potentially harmful telepathic noise; the Mindsword, when wielded, also affects everyone within its radius, even those whom the wielder might prefer not to mentally enslave.
** Another example from the same series is Prince Adrian. In ''Woundhealer's Story'', it turns out that the reason he is blind, and apparently simple-minded, is that he is actually [[spoiler:such a naturally powerful wizard that for the first several years of his life, he does not bother using his eyes at all, relying instead on his magical senses. He likewise does not bother trying to talk to anyone, because he has such powerful means of magical communication]].
** Many of the powers granted by the Swords are like this. Sightblinder, for example, always disguises its wielder, from friend and foe alike. Soulcutter causes soul-crushing despair in everyone within its area of effect, including the wielder. Townsaver and Shieldbreaker both prevent their wielders from putting down either one, or from running away, once battle is joined; Dragonslicer seems to have a similar issue, although the circumstances under which it activates in the first place are much rarer. The Mindsword, when its blade is exposed but it is not wielded by anyone, generates waves of potentially harmful telepathic noise; the Mindsword, when wielded, also affects everyone within its radius, even those whom the wielder might prefer not to mentally enslave.
** Another example from the same series is Prince Adrian. In ''Woundhealer's Story'', it turns out that the reason he is blind, and apparently simple-minded, is that he is actually [[spoiler:such a naturally powerful wizard that for the first several years of his life, he does not bother using his eyes at all, relying instead on his magical senses. He likewise does not bother trying to talk to anyone, because he has such powerful means of magical communication]].
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* In ''Cold Kiss'' by Amy Garvey, Wren's PsychicPowers act up the most when she is feeling overly emotional.
* Due to a chemical accident, the title character in ''Confessions of Super-Mom'' has a warped right hand from which she can spray a mysterious fluid. Not only is she incapable of completely stopping it from dripping, she discovers during a sexual encounter that she... well, sprays at the moment of climax.
* In ''Literature/{{Croak}}'', Damning comes with unfortunate side effects. Like potentially damning your friends if you don't discharge the energy often enough.
* Due to a chemical accident, the title character in ''Confessions of Super-Mom'' has a warped right hand from which she can spray a mysterious fluid. Not only is she incapable of completely stopping it from dripping, she discovers during a sexual encounter that she... well, sprays at the moment of climax.
* In ''Literature/{{Croak}}'', Damning comes with unfortunate side effects. Like potentially damning your friends if you don't discharge the energy often enough.
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* ''Literature/TheHitchhikersGuideToTheGalaxy'': In ''Literature/TheRestaurantAtTheEndOfTheUniverse'', the Belcerebon people of Kakrafoon are cursed with the disease of uncontrollable telepathy. They seek relief from it by staging a Disaster Area concert.
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* In the third book of the ''Literature/KnightAndRogueSeries'' Michael has had magic long enough that his powers have adjusted to him and began to trigger on their own, though he's still capable to shutting them down once he notices he's using them.
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* In the ''Literature/LordDarcy'' stories, prescience is one of the few Talents which has yet to be understood by magical science, and thus, is subject to this trope. Commander Lord Ashley from ''Too Many Magicians'' can see a few seconds into the future, but only intermittently when he's under stress.
* In ''Literature/MelodyAndThePierToForever'', Mathematicians who are untrained may experience power incontinence. In Book 1, Melody struggles to control the Aecxis of Rage and suffers explosions of unintentional or poorly directed aecxal power on multiple occasions.
* In ''Literature/MelodyAndThePierToForever'', Mathematicians who are untrained may experience power incontinence. In Book 1, Melody struggles to control the Aecxis of Rage and suffers explosions of unintentional or poorly directed aecxal power on multiple occasions.
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* Common in Octavia Butler's ''[[Literature/{{Patternist}} Patternmaster]]'' universe. "Latent" telepaths, in particular, are entirely unable to control their mind-reading abilities, which makes them miserable people in every sense of the word.
* ''Literature/RealmOfTheElderlings'': Thick, in the ''Tawny Man'' trilogy, is somewhat mentally handicapped, but incredibly strong in The Skill (a form of mental magic). He often has difficulty ''not'' broadcasting strong emotions to everyone within miles of him (and forcing them to feel an echo of what he does).
* ''Literature/RealmOfTheElderlings'': Thick, in the ''Tawny Man'' trilogy, is somewhat mentally handicapped, but incredibly strong in The Skill (a form of mental magic). He often has difficulty ''not'' broadcasting strong emotions to everyone within miles of him (and forcing them to feel an echo of what he does).
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* In ''Literature/TheShadowSpeaker'', Dikeogu has the power of ShockAndAwe, however until he learns to control it, it pretty much results in lightning randomly hitting him.
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PowerIncontinence in literature.
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* Orrec's problem in ''Gifts,'' the first in the ''Literature/AnnalsOfTheWesternShore''. He has no idea when he's actually activated his DeadlyGaze, making him a danger to everyone around him. After destroying an entire hillside and thinking he destroyed his father too, he goes blindfold for everyone's protection. [[spoiler:It turns out the real reason he can't tell when he's using his power is because ''he has no power''. His father was just unmaking things from just behind him every time.]]
* Gloom Glimmer suffers from this in ''Literature/{{Brennus}}''. Her AdaptiveAbility tries to give her what it thinks she needs, constantly -- such as clairvoyance for every odd thought, or a powerful sexual glamour when she wants to impress her new teammates. She takes special pills to rein it in.
* In the ''Literature/ChaosGods'' series, Fallen Servants have a flesh-destroying "death touch" ability. While some Fallen Servants can control their power, the protagonist Ki cannot turn hers off.
* In Jeramey Kraatz's ''Literature/TheCloakSociety'', Alex's power causes him to see everything bluish, because of the energies he uses to perform telekinesis. He also breaks things in his dreams. [[spoiler: Later Kirbie recommends mediation to the team because it helped control her {{Shapeshifting}}; Alex finds it helps.]]
* In ''Literature/DeadWest'', some of the more powerful aristocrats are suffering from this. Most notable with the Porcelain Doctor; he keeps healing himself even when he doesn't need it, and thus his brain is always strained, causing a mean migraine. It is not so bad, since he also fixes those who are near/synchronised with him, like Gervas, but when the overflowing power is his pyrokinesis, he starts to constantly run a fever, and sadly, burning others several times.
* Creator/TerryPratchett's ''Literature/{{Discworld}}'':
** In ''Discworld/UnseenAcademicals'', a side-story concerns the first Medusa to be employed by the Ankh-Morpork City Watch. The first gorgon policewoman works out just fine -- until her sunglasses get knocked off and she inadvertently turns a few people into stone.
** In ''Discworld/EqualRites'', Eskarina's innate magical abilities tend to leak out when she's under emotional stress.
* According to ''Literature/TheDivineComedy'', those damned for heresy are gifted with vision of Earth's future. The catch is that they can ''only'' see the future and not the present or the past, meaning that when the Apocalypse comes and all souls enter Heaven or Hell, they will have knowledge of nothing but their torment.
* ''Literature/LesEnfantsDePromethee'' begins when Mathias, a young [[TheChosenMany Pillar]], loses [[BlowYouAway control of the wind]] and crashes an airplane at [[WizardingSchool the Academy]]. It gets worse when [[AntiMagic a Canceller]] gets a similar case of PowerIncontinence and causes every Pillar in Primville to lose their power at the same time, causing Red Tuesday. [[FromBadToWorse And then]] [[spoiler: it turns out that Prometheus is affected with PowerIncontinence, and it becomes apparent that every Pillar is doomed to lose their power eventually.]]
* In ''Literature/TheFifthSeason'', this is part of why orogenes are [[TheDreaded feared]] and [[MugglePower despised]]: they intuitively reach for their powers when they're threatened or distraught, which can [[DishingOutDirt cause earthquakes]] or [[AnIcePerson freeze their surroundings solid]]. One character explains that the fight-or-flight instinct has no sense of magnitude or of how to respond appropriately to a threat, so learning restraint is a big part of orogenes' TrainingFromHell.
* Imagers in L.E. Modesitt's ''Literature/ImagerPortfolio'' can sometimes use their ImaginationBasedSuperpower accidentally if they are daydreaming (or just regular dreaming, for that matter). For example, the hero discovers his imaging powers when he starts daydreaming about his master's (he was a journeyman painter at the time) JerkAss son blowing himself up by mixing oils wrongly. Next thing he knows: BOOM!!
** This also prompts a specific rule that imagers cannot sleep in the same room as any other person, including spouses, because of the risk of killing someone by imaging in your sleep. (This only applies to literal sleep, not sex, as a fair number of imagers are married and have children.)
* ''Literature/JourneyToChaos'': The magic involved with [[spoiler: Mia's hammer space]] is too great for her to control and so she needs the guild lobby to serve as her power limiter.
* ''Literature/LilithsBrood'': Jodahs is the first [[HalfHumanHybrid human-Oankali hybrid]] to be born an "[[BizarreAlienSexes ooloi]]" and inherit the Oankali's full ability to control DNA and living tissue. For a while, he's stuck inflicting random mutations on himself and everything he touches, including the buildings of the OrganicTechnology village he lives in. [[spoiler:His abilities stabilize once he finds mates.]]
* In the ''Literature/ParadoxTrilogy'', plasmex-based psychic powers are initially tied to the user's emotions. Plasmex users have to undergo training in order to separate their powers from their emotional state. [[spoiler:Devi, having very little plasmex, never got such training; when she gains dangerous, corrupt plasmex powers from the Stoneclaw virus, the effects manifest uncontrollably whenever she gets angry]].
* ''Literature/{{Renegades}}'' has a few examples.
** Max's powers are always on, which is why he has to live in a containment chamber, with only the NighInvulnerable Captain Chromium and doctors in hazmat suits being able to visit.
** Many prodigious children have trouble controlling their powers when they're young. When Adrian's ArtInitiatesLife powers first manifested, he infested his house with squiggles convinced they were dinosaurs (and acting appropriately), and Nova's mother kept passing out when feeding her because of Nova's ForcedSleep ability acting up.
* In Creator/RobertAHeinlein's ''Literature/StarshipTroopers'', the entire first section of the novel is dedicated to basic training, which among other things is intense training in the use of the Mobile Infantry's powered suits. It is stated outright that it is easy to dislocate a shoulder just learning to scratch your back.
* In ''Literature/SuperPowereds'', a small percentage of people have super powers of some sort. However, only a quarter of those are able to control their abilities. Those who can are called Supers and can apply for a Hero license (which allows them to engage in vigilante justice and provides HeroInsurance). Those who can't are called Powereds and are looked down upon by both normal humans and Supers. While some Powereds only inconvenience themselves (e.g. a girl who levitates when excited or a guy who teleports randomly when sneezing), others can be dangerous to others (e.g. a guy who can accidentally cause a state-wide blackout or a guy who affects probabilities around him, which can either result in a lottery win or a boiler explosion). The main characters are former Powereds, who have been granted control over their abilities through an experimental procedure. It's later revealed that [[spoiler:former Powereds tend to be more powerful than other Supers, and some speculate that the Powereds' inability to control their powers stems from the abilities being too powerful to handle without artificial means]].
* Ia of ''Literature/TheirsNotToReasonWhy'' has huge precognitive powers, and anyone who touches her risks being pulled into them, with often traumatic results.
* In the ''Literature/TowersTrilogy'', magic is tied to emotion, and losing control can result in a release of power called "radiating". People with potent magic are trained from childhood to control their magic energy using breathing exercises. Xhea never received such training, as everyone believed she had no magic; when her dark magic finally awakens, her radiating turns her into a WalkingWasteland.
* Iris from ''Literature/TheUltraViolets'' has a tendency to "rainbow" when nervous, causing her art beam superpowers to go wild and produce crazy patterns and rainbows at random, and her face to break out in random patterns like lilac flowers, lavender stripes, and violet polka dots.
* In ''Literature/VoidCity'', Eric has difficulty controlling some of his vampiric powers, such as his super-speed, which kicks in and out at random. [[spoiler:It's a side effect of a spell Phillipus put on him to shield him from his sire's awareness; as the spell breaks down, Eric gains more control over his abilities]].
* A number of characters in ''Literature/{{Worm}}'' suffer from this to one degree or another. A woman with the ability to make people suggestible through her songs told her ex to "go fuck himself" without realizing she was affecting him. [[ExactWords He did]]. Fatally. Another example is Panacea, who accidentally [[spoiler:brainwashed her foster sister into being in love with her]].
* In the ''Literature/ZacharyNixonJohnson'' series, Natasha, antagonist of ''The Flaxen Femme Fatale'', is a powerful psi who is unable to fully control her abilities. Whenever she gets upset, she tends to accidentally kill everyone around her.
* In ''Literature/{{Zeroes}}'', Anonymous and Crash are unable to control their powers. Anonymous is forgotten by everyone as soon as he's out of their sight, and Crash risks destroying any advanced technology in her vicinity.
* In ''Literature/TheZombieKnight'', after the already epic-level [[CameBackStrong servant]] Field Marshal Jackson [[TookALevelInBadass achieves emergence]], he starts uncontrollably incinerating nearby objects. It trashes his headquarters and even kills one of his fellow Field Marshals, although [[ResurrectiveImmortality the latter was only inconvenienced.]]
** [[BodyHorror Mutation users]] will also be forcefully mutated by their power unless they use their ability regularly. Fortunately they can guide the mutation to some extent when it starts to happen.
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* Orrec's problem in ''Gifts,'' the first in the ''Literature/AnnalsOfTheWesternShore''. He has no idea when he's actually activated his DeadlyGaze, making him a danger to everyone around him. After destroying an entire hillside and thinking he destroyed his father too, he goes blindfold for everyone's protection. [[spoiler:It turns out the real reason he can't tell when he's using his power is because ''he has no power''. His father was just unmaking things from just behind him every time.]]
* Gloom Glimmer suffers from this in ''Literature/{{Brennus}}''. Her AdaptiveAbility tries to give her what it thinks she needs, constantly -- such as clairvoyance for every odd thought, or a powerful sexual glamour when she wants to impress her new teammates. She takes special pills to rein it in.
* In the ''Literature/ChaosGods'' series, Fallen Servants have a flesh-destroying "death touch" ability. While some Fallen Servants can control their power, the protagonist Ki cannot turn hers off.
* In Jeramey Kraatz's ''Literature/TheCloakSociety'', Alex's power causes him to see everything bluish, because of the energies he uses to perform telekinesis. He also breaks things in his dreams. [[spoiler: Later Kirbie recommends mediation to the team because it helped control her {{Shapeshifting}}; Alex finds it helps.]]
* In ''Literature/DeadWest'', some of the more powerful aristocrats are suffering from this. Most notable with the Porcelain Doctor; he keeps healing himself even when he doesn't need it, and thus his brain is always strained, causing a mean migraine. It is not so bad, since he also fixes those who are near/synchronised with him, like Gervas, but when the overflowing power is his pyrokinesis, he starts to constantly run a fever, and sadly, burning others several times.
* Creator/TerryPratchett's ''Literature/{{Discworld}}'':
** In ''Discworld/UnseenAcademicals'', a side-story concerns the first Medusa to be employed by the Ankh-Morpork City Watch. The first gorgon policewoman works out just fine -- until her sunglasses get knocked off and she inadvertently turns a few people into stone.
** In ''Discworld/EqualRites'', Eskarina's innate magical abilities tend to leak out when she's under emotional stress.
* According to ''Literature/TheDivineComedy'', those damned for heresy are gifted with vision of Earth's future. The catch is that they can ''only'' see the future and not the present or the past, meaning that when the Apocalypse comes and all souls enter Heaven or Hell, they will have knowledge of nothing but their torment.
* ''Literature/LesEnfantsDePromethee'' begins when Mathias, a young [[TheChosenMany Pillar]], loses [[BlowYouAway control of the wind]] and crashes an airplane at [[WizardingSchool the Academy]]. It gets worse when [[AntiMagic a Canceller]] gets a similar case of PowerIncontinence and causes every Pillar in Primville to lose their power at the same time, causing Red Tuesday. [[FromBadToWorse And then]] [[spoiler: it turns out that Prometheus is affected with PowerIncontinence, and it becomes apparent that every Pillar is doomed to lose their power eventually.]]
* In ''Literature/TheFifthSeason'', this is part of why orogenes are [[TheDreaded feared]] and [[MugglePower despised]]: they intuitively reach for their powers when they're threatened or distraught, which can [[DishingOutDirt cause earthquakes]] or [[AnIcePerson freeze their surroundings solid]]. One character explains that the fight-or-flight instinct has no sense of magnitude or of how to respond appropriately to a threat, so learning restraint is a big part of orogenes' TrainingFromHell.
* Imagers in L.E. Modesitt's ''Literature/ImagerPortfolio'' can sometimes use their ImaginationBasedSuperpower accidentally if they are daydreaming (or just regular dreaming, for that matter). For example, the hero discovers his imaging powers when he starts daydreaming about his master's (he was a journeyman painter at the time) JerkAss son blowing himself up by mixing oils wrongly. Next thing he knows: BOOM!!
** This also prompts a specific rule that imagers cannot sleep in the same room as any other person, including spouses, because of the risk of killing someone by imaging in your sleep. (This only applies to literal sleep, not sex, as a fair number of imagers are married and have children.)
* ''Literature/JourneyToChaos'': The magic involved with [[spoiler: Mia's hammer space]] is too great for her to control and so she needs the guild lobby to serve as her power limiter.
* ''Literature/LilithsBrood'': Jodahs is the first [[HalfHumanHybrid human-Oankali hybrid]] to be born an "[[BizarreAlienSexes ooloi]]" and inherit the Oankali's full ability to control DNA and living tissue. For a while, he's stuck inflicting random mutations on himself and everything he touches, including the buildings of the OrganicTechnology village he lives in. [[spoiler:His abilities stabilize once he finds mates.]]
* In the ''Literature/ParadoxTrilogy'', plasmex-based psychic powers are initially tied to the user's emotions. Plasmex users have to undergo training in order to separate their powers from their emotional state. [[spoiler:Devi, having very little plasmex, never got such training; when she gains dangerous, corrupt plasmex powers from the Stoneclaw virus, the effects manifest uncontrollably whenever she gets angry]].
* ''Literature/{{Renegades}}'' has a few examples.
** Max's powers are always on, which is why he has to live in a containment chamber, with only the NighInvulnerable Captain Chromium and doctors in hazmat suits being able to visit.
** Many prodigious children have trouble controlling their powers when they're young. When Adrian's ArtInitiatesLife powers first manifested, he infested his house with squiggles convinced they were dinosaurs (and acting appropriately), and Nova's mother kept passing out when feeding her because of Nova's ForcedSleep ability acting up.
* In Creator/RobertAHeinlein's ''Literature/StarshipTroopers'', the entire first section of the novel is dedicated to basic training, which among other things is intense training in the use of the Mobile Infantry's powered suits. It is stated outright that it is easy to dislocate a shoulder just learning to scratch your back.
* In ''Literature/SuperPowereds'', a small percentage of people have super powers of some sort. However, only a quarter of those are able to control their abilities. Those who can are called Supers and can apply for a Hero license (which allows them to engage in vigilante justice and provides HeroInsurance). Those who can't are called Powereds and are looked down upon by both normal humans and Supers. While some Powereds only inconvenience themselves (e.g. a girl who levitates when excited or a guy who teleports randomly when sneezing), others can be dangerous to others (e.g. a guy who can accidentally cause a state-wide blackout or a guy who affects probabilities around him, which can either result in a lottery win or a boiler explosion). The main characters are former Powereds, who have been granted control over their abilities through an experimental procedure. It's later revealed that [[spoiler:former Powereds tend to be more powerful than other Supers, and some speculate that the Powereds' inability to control their powers stems from the abilities being too powerful to handle without artificial means]].
* Ia of ''Literature/TheirsNotToReasonWhy'' has huge precognitive powers, and anyone who touches her risks being pulled into them, with often traumatic results.
* In the ''Literature/TowersTrilogy'', magic is tied to emotion, and losing control can result in a release of power called "radiating". People with potent magic are trained from childhood to control their magic energy using breathing exercises. Xhea never received such training, as everyone believed she had no magic; when her dark magic finally awakens, her radiating turns her into a WalkingWasteland.
* Iris from ''Literature/TheUltraViolets'' has a tendency to "rainbow" when nervous, causing her art beam superpowers to go wild and produce crazy patterns and rainbows at random, and her face to break out in random patterns like lilac flowers, lavender stripes, and violet polka dots.
* In ''Literature/VoidCity'', Eric has difficulty controlling some of his vampiric powers, such as his super-speed, which kicks in and out at random. [[spoiler:It's a side effect of a spell Phillipus put on him to shield him from his sire's awareness; as the spell breaks down, Eric gains more control over his abilities]].
* A number of characters in ''Literature/{{Worm}}'' suffer from this to one degree or another. A woman with the ability to make people suggestible through her songs told her ex to "go fuck himself" without realizing she was affecting him. [[ExactWords He did]]. Fatally. Another example is Panacea, who accidentally [[spoiler:brainwashed her foster sister into being in love with her]].
* In the ''Literature/ZacharyNixonJohnson'' series, Natasha, antagonist of ''The Flaxen Femme Fatale'', is a powerful psi who is unable to fully control her abilities. Whenever she gets upset, she tends to accidentally kill everyone around her.
* In ''Literature/{{Zeroes}}'', Anonymous and Crash are unable to control their powers. Anonymous is forgotten by everyone as soon as he's out of their sight, and Crash risks destroying any advanced technology in her vicinity.
* In ''Literature/TheZombieKnight'', after the already epic-level [[CameBackStrong servant]] Field Marshal Jackson [[TookALevelInBadass achieves emergence]], he starts uncontrollably incinerating nearby objects. It trashes his headquarters and even kills one of his fellow Field Marshals, although [[ResurrectiveImmortality the latter was only inconvenienced.]]
** [[BodyHorror Mutation users]] will also be forcefully mutated by their power unless they use their ability regularly. Fortunately they can guide the mutation to some extent when it starts to happen.
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