I am a young adult who is being mocked by all of my doctors, because they just don't believe me. After suffering a serious head injury, I remain incredibly vulnerable to new concussions.
It seems as though tiny impacts or accelerations cause for what feels like my brain hitting against my skull. For example, if I turn my head too quickly to the right, I feel as though I've been hit on the left side of my head. This effect is so sensitive that I can no longer walk without feeling the impact shock travel up into my head.
My doctors are telling me that this is not real and that it is possibly nerve damage, but one day I got punched in the arm, and the impact was so great that the inside of my head was hitting around in there. The next day, I had a new concussion that lasted an entire month (severe headache, difficulty focusing, memory loss, all that fun stuff...)
It also appears as though this is a "wear and tear" effect, as if I walk long distances or do something that shakes me around a bit, over time I become more and more sensitive to small impacts.. For this reason, I am terrified of moving.
As if this hasn't already ruined my life, I seem to be even MORE vulnerable if I am exposed to relatively high temperatures. I now have to take cold showers. It seems if I apply even a small amount of pressure to my head, I become more sensitive to impacts, so now I can't wash my hair when I take my cold showers... (I ended up getting a buzz cut)
My condition also worsens when the blood rushes to my head when I lay down, so I have to avoid sleeping for too long.
I feel a sharp pain in the back of my head if I lay on my back, with my head resting on a pillow.
This injury is so severe that I can no longer walk, run, lift weights, brush my teeth, take showers, sleep, travel by car (bumps in the road vigorously shake the contents of my head), bike, play Wii, or anything whatsoever requiring any small movement, without worsening my condition...
I've done research on the internet to find, well, nothing. No situations seem to resemble this one, so this is a cry for help. Doctors ignore me, I had to quit my job because of minimal physical work, I had to put away my black belt in karate forever, my life is seriously ruined...
If you have any information that may be useful for me, it could help me find a reason to live again, and I would be very grateful. Please, I wish somebody out there could help. I'm still young and I haven't been able to fully experience my youth.

Hello and welcome, though sorry to hear of what brings you here.

I am wondering if you may want to copy your post onto our TBI & PCS forum as well, as the members there know a lot about head injury and after effects.
Here is the link to that forum http://neurotalk.psychcentral.com/forum92.html

My mom had a serious head injury about six months ago. From her experience, I can tell you she felt very sensitive at first, but it got better pretty quickly. The injury can also affect your mood, so your feeling of hopelessness can be part of it. You're literally rattled. She mostly had foggy thinking. Everybody's different, but I would say you will probably find that things get better if you are patient, take care of your head as best you can, and just give it time. At first I didn't think she was ever going to find her words again, but now she's lots better. And she's pushing 80, so since you're young you will probably have an even better outcome. Keep looking for a sympathetic doctor, though, who will work with you; and if you feel suicidal go to an emergency room, because that really is a medical emergency. Same if your symptoms get noticeably worse. OK? Hang in there! You mostly need time to heal.