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About nerve damage causing the inability to feel pain.:

 1 Edmania, Tue, 26th Oct '10 8:54:41 PM from under a pile of erasers
o hai
Does this also make it impossible to feel pleasure? Or any physical feeling in general?
If people learned from their mistakes, there wouldn't be this thing called bad habits.
An accurate depiction
Yes. Once the nerve endings are gone, the entire area is numb.
This is this.
 3 Edmania, Tue, 26th Oct '10 8:59:47 PM from under a pile of erasers
o hai
So is there any other (natural) way to cause the lack of being able to feel pain but still being able to feel other things in general?
If people learned from their mistakes, there wouldn't be this thing called bad habits.
Yes, Congenital Insensitivity to Pain, changeing which nerves get damaged some how (there are ones for pain/temperature, vibration/pressure, light touch, heavy touch, etc.), chemical agents.

And of course Lighting or Green Rocks

 5 Blurring, Tue, 26th Oct '10 9:45:46 PM from Ampang, Selangor, Malaysia.
With a shot so elemental
There are evidence that shows pains have specific receptor and brain area. An example is here. This might help you.
If the one wave motion gun to rule them all is out there, it needs to be found for safekeeping.
"Does this also make it impossible to feel pleasure? Or any physical feeling in general?"

Depends how general the damage is. There are different sensors for touch, pain, temperature, pressure, etc. Usually, what would damage one would damage the others, but not always.
If I'm asking for advice on a story idea, don't tell me it can't be done.
 7 Schmitty, Wed, 27th Oct '10 9:23:40 PM from Right behind you
:3
I have a similar situation in my own story I am trying to work on where several (the lead + some minor characters) feel little or no pain/pleasure/anything in certain places. In it, the main character, a Squishy Wizard of sorts, claims to not feel pain what so ever due to the magical energies used by spell-casters often results in the deadening of the person's nerves. I leave it vague as to seem like he could really just have a high tolerance of pain but add in details that make it seem like he can't feel anything like getting wounds that would normally make a person cry out in pain and not even noticing it until another character points it out that he is bleeding. The main character is then harassed by the love interest saying that he needs to either stop being the group's Magic Knight and take a break or will end up alone and miserable or dead, in additon to the standard "you need to take better care of yourself." One of the other things besides pain that is important is that he doesn't get hungry and when asked when was the last time he had something to eat he reveals that he hasn't eaten yesterday's breakfast because he just "forgot about eating." I eventually have the main character come to terms with his condition and make him try to at least remember what certain things felt like before the loss of feeling so he can at least function properly or try and imagine what things would feel like. This is in addition to trying to follow an eating schedule so he doesn't pass out from lack of nutrients/energy.
:3
Also, remember this: pain is a symptom of quite a few diseases, sometimes the only really noticeable symptom until it's too late. character who cannot feel pain is at a dangerously high risk of not getting themselves the medical care they need.
I heard of a person with sensory processing differences who walked around half a day with a broken arm and even tried to join a tennis game before noticing that her arm was hurting a little.
If I'm asking for advice on a story idea, don't tell me it can't be done.
Any form of peripheral neuropathy will produce a loss of sensation, including pain. Leprosy, diabetes and nerve injury (axonotmesis) are among the many possible causes. Keep in mind, however, that in the Real World, nerve bundles are responsible for both sensation and movement - that is, both voluntary and involuntary muscle control can be compromised. Muscle weakness or lack of control tend to accompany any loss of sensation (just think of temporary Neurapraxia due to ischemia - when an appendage falls asleep. Not only is it numb, but almost entirely unresponsive as well).

There remains, however, two possibilities for creating a realistic character who cannot feel pain (or much pain, in any case). One is specific damage to the Nociceptors, sensory neurons responsible solely for communicating pain. These are spread throughout the body, so external trauma is unlikely to eliminate them all, but it is not impossible to imagine a viral or bacterial infection targeting and damaging nociceptors system-wide. The subject would still feel pain, due to some other sensory receptors failing to distinguish between stimuli, but it would be very dull compared to the usual response.

The second possibility is damage to the thalamus section of the brain, preventing propagation of the signals to cerebral cortex, or to the cerebral cortex itself. This damage could be the result of an infection or from some past trauma.

edited 28th Oct '10 2:16:04 PM by Keefer

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Total posts: 10
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