"He has veins on his forehead now, which is the official Star Trek code for "This poor bastard is in for a horribly painful transformation and/or death." Seriously, if you are ever yourself in a Star Trek episode and you see this happening to yourself, turn your phaser on yourself. There is no hope if you have a veiny head unless you are an alien or a main cast member. Just put yourself out of your own misery."Sometimes I feel I've got to (dum dum) run away I've got to (dum dum) get away from the pain that you drive into the heart of me... In general, the tendency of people suffering some sort of abnormal condition to develop highly visible, off-color veins all over their body or near the distressed areas. Might be due to catching a bite from someone/thing infected with The Virus, or as a manifestation of a villain's Red Right Hand after willingly succumbing to The Dark Side or The Corruption. It's also possible if the character is suffering a Super Power Meltdown, Power Degeneration, or as a side effect to taking too much Psycho Serum. A vampire, werewolf or other supernatural critter hit with Depleted Phlebotinum Shells inducing a burning reaction (or even just partial sun exposure/blood starvation) may develop Tainted Veins because their glamour is failing. Special mention goes to zombie bites for always creating nasty necrotic veins wherever they bit. Expect characters with a Healing Factor (or with friends possessing Healing Hands and or a Magic Antidote) to quickly and neatly reverse the appearance of these veins. See also Volcanic Veins for when they glow. Compare Vein-O-Vision, which is where a character has a power that makes them see the world this way. This is a Justified Trope (Tropes Are Not Bad): There are toxins that cause venous thrombosis (clotting of blood in veins) which can make surface veins visible and dark - especially if the clotting is in deep tissue in an affected limb.
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Anime & Manga
- Owing to his tendency to forcibly insert himself right into the bloodstream and organs of his opponents to extract 'information', Armisael in Neon Genesis Evangelion causes this to both the Eva he's attacking and the pilot of the Eva. Let's just say that Rei's encounter with Armisael looked incredibly painful.
- Attack on Titan: A side effect of Titan shifting.
- Babidi's human henchmen in Dragonball Z have unusually bulging veins without discoloration.
- This is one of the warning signs of Tetsuo's imminent mutation near the end of AKIRA.
- Greed in Fullmetal Alchemist gets these whenever he and Ling have a disagreement.
- Ed also gets these temporarily when Pride tries to take him over.
- Dark Marik◊ of Yu-Gi-Oh!.
- Inverted in Bleach, where highly visible veins are caused by the use of "Blut Vene", a Quincy defensive technique.
- Kurumi from School-Live! gains these on her right arm, the right side of her neck, and a bit of the right side of her face, after her close brush with zombification. It is unsure if this will be permanent however, as she's treated quickly but there are signs the treatment wasn't permanent.
- These have a tendency to show up whenever someone's using their powers in Snow White and Seven Dwarfs. With it being a series about being Blessed with Suck, they're generally not a good sign.
- Viruses in Venus Versus Virus have these, usually on their faces.
- In Tokyo Ghoul, Ghouls tend to get raised, red veins around their eyes when angry or otherwise using their powers.
- The vampires in 30 Days of Night.
- Dreamcatcher had this, but it was an alien plant growing into the infectee's face.
- The vampires in Interview with the Vampire had visible veins on their faces, too, but that was as much due to their creepily transparent porcelain white skin as it was to their veins being full of freshly drunk blood.
- Tony Stark's Palladium poisoning in Iron Man 2 displayed these symptoms.
- Alien-influenced humans in Skyline.
- Poison Ivy's toxic kisses cause these to appear on her victims in Batman & Robin.
- This happens to whoever Rogue touches in the X-Men movies.
- Mutated Senator Kelly also has them before he dies.
- Instead of the expected fire effects, movieverse Jean Grey/Phoenix gets Tainted Veins and Black Eyes of Evil when in Dark Phoenix mode in X3.
- A sign that you are falling under the Big Bad's sway in 5ive Girls.
- Zombies in Rockabilly Zombie Weekend, as part of the gradual breakdown of their body, have their veins gradually begin bulging out until they're visible as thick purple lines etched across their bodies.
- In Star Trek: First Contact, as the Borg invade the Enterprise, they convert crew members by injecting (presumably) some kind of nanobot version of The Virus which can be seen spreading through dark veins from the point of injection.
- The vampires in John Carpenter's Vampires have them.◊
- From the Dresden Files novel, Changes, we are treated to a minor case of this courtesy of Ebenezar.
- Also in Proven Guilty when Harry looks upon a heroin addict with the Sight and sees her addiction manifesting as green-black veins under her skin ending at dozens of tiny, hungry mouths opening and closing where her needle tracks were in the real world
- In the Skulduggery Pleasant series, people possessed by Remnants (evil shadows/sprits) get black veins and lips, but only if the Remnant wants to show itself. Otherwise they just look like normal people.
- When Tash Arranda is infected with The Virus in Galaxy of Fear: The Planet Plague, she starts off with a rash that becomes a swelling bump with raised brownish veins. Then it starts leaking brownish-green Blob Monster goo.
- Spore assimilates people by sending out dark vinelike things that sink into the skin and are quickly only visible as a "dark tracing of lines", like veins.
Live Action TV
- Dark Willow on Buffy.
- An episode of Star Trek: The Next Generation had Geordi get infected by a disease that covered him with invisible blue glowing veins. It Makes Sense in Context.
- Borg assimilation does this, with added blueish-grey skin.
- SF Debris notes that if your veins start going weird (and especially on your forehead), you're screwed unless you're a main character.
- The 2nd Doctor was up against a "plague" that gave a moonbase crew tainted veins. Eight years later, the same tainted veins gave the 4th Doctor a clue who he was up against.
- In the series 5 two-parter The Hungry Earth/Cold Blood, Alaya poisons Tony. His veins turn green.
- In Smallville, Clark gets 'em when Kryptonite is around... and Kryptonite Is Everywhere.
- Happens a few times in Supernatural, more notably when Castiel is possessed by the leviathans.
- Skinner in The X-Files episode "SR 819" was poisoned by Nanomachines. He got better. However, it was never fully resolved and he could be affected by it later at any time.
- In Wolfblood when a character is close to transforming into a wolf they get these along with Supernatural Gold Eyes.
- This is the main symptom of the plague spread by Pestilence in the Sleepy Hollow episode "John Doe".
- In Helix, victims of The Virus develop black veins, particularly visible in the denuded infected lab rats the CDC researchers use for testing.
- In The Vampire Diaries, this is a standard part of a vampire's Game Face. The veins around their eyes appear to writhe with a black taint.
- People affected by Alisha's power in Misfits have their veins turn blue until contact is broken.
- Luna Vachon's gimmick, as a result of being crazy or occult, depending on what time period and which promotion you saw her in. Bull Nakano had a similar look, so naturally the two were put together as a team when they ended up in the same locker rooms.
- The Seventh Soul in GURPS Villains has black veins all over its body. These are its only persistent identifying feature, since it reincarnates.
- After Beatrice dies in Dante's Inferno, her spirit form has dark veins... all over her naked pale chest.
- In Deus Ex and other games set in the same universe, nanotech augmentation gives you this. Although you're far from sick... Actually, you are sick and your augs and Gray Death are one and the same, you are just immune to the bad symptoms.
- In Dragon Age II, this is one symptom of the Darkspawn corruption that finally kills Wesley.
- And Bethany/Carver, if she dies in the Deep Roads. Or anyone who dies via the Taint, of course.
- In Killzone, Helghast have these, as a result of the first settlers trying to adjust to Helghan's sickly atmosphere and hundreds of years worth of forced evolution.
- In Knights of the Old Republic, ash-pale skin with blue veins signifies your character going completely darkside.
- Happens to Leon in Resident Evil 4, during a dream sequence after he's infected with the Las Plagas parasite. Fortunately for him, he's able to find a cure before anything like that starts to happen for real.
- Happens to Wesker in Resident Evil 5 after the heroes overdose him on his own serum. They become even more prominent when he infects himself with Uroboros, but are quiclky concealed by his skin partially decomposing.
- In Resident Evil 6, Derek Simmons, after being shot with a viral dart, develops a cluster of these spreading from the wound onto his face and shoulder. They disappear when he transforms shortly after.
- In Metroid Prime 3: Corruption, each time Samus absorbs a Phazon Core, her veins become more noticeable in reflections of her face; bigger, longer, bluer.
- Spore has this as a variant of coloration for your creature.
- Taken Up to Eleven in [PROTOTYPE] and [PROTOTYPE 2]. Alex Mercer's and James Heller's bodies are covered in thick, pulsating red and black veins when they unleash their Blacklight-virus powers.
- In Far Cry, seeing the veins in your arms turn dark is how you find out that you've been exposed to the mutagen.
- Skullgirls' Painwheel has dark veins all over her body, thanks to the experiments that transformed her into her current state.
- It happens to Batman in Batman: Arkham City after the Joker infects him with the Titan disease, the veins becoming more prominent and black across his face.
- If a character consistently favors magic in certain Fable games, the 'will lines' they develop resemble this.
- Darkest Dungeon: The Abomination, as seen in his skill slots. He has a stabilized flow of blight in his veins, and can deepen the veins to increase his resistances... or just cough up venom and spit it at his foes. Note that blight represents a combination of poison, venom, and acid all in one goopy package.
- In the Global Guardians PBEM Universe, when the supervillain Virus injects his victims with the mind-control serum, their veins turn dark green around the injection site.
- Cyborg supervillain La Constructeuse has this sort of thing going on with her own body, but the vein-tracery looks like circuitry.