Hello,
My story in short:
August 2010, crashed racing a motorcycle and hit my head. Reportedly lost consciousness for 10-15 seconds. Taken to ER, CT scan was negative, and was released the following day. Persistent headache still present in September '10, my PCP started amitriptyline, which seemed to take the edge of it. I had an MRI done in September, also negative. I tried to wean off the amitriptyline in December due to the side effects, but the headaches just got worse.
Per two neurologist's advice, I have also tried prednisone, indomethacin, and gabapentin. None of these medications eliminated the headache entirely, and all had side effects that were worse than the headaches. Exercise with a heart rate above 160 initially, and 180 now, seemed to worsen the headache, but it would subside upon ceasing exercise and I would feel better for usually 30min to an hour after exercise. I had a neuropsych evaluation done in May, was told I am still above, or highly above, the cognitive capabilities of my age group. That is all well and good, but I still feel slow. The neuropsych read me like a book, and seemed to immediately grasp my personality, and the problems I was suffering from.
Fast forward to June 26th, and I had been nearly headache free (still on amitriptyliine) for almost 2 weeks prior. I had seen a chiropractor that helped my neck it seemed, and was in great spirits, really felt I was on the final road to recovery. Then I went to Colorado for a trackday, and the temperature and humidity were very high. Easily 90+ in the shade, plus the added radiant heat off the asphalt. Suffered from what must have been heat exhaustion/stroke for most of the afternoon, and headache was suddenly the worst it has been since last year, accompanied by an odd sense of vertigo, or that my balance wasn't "right".
Now for a week I am back to the debilitating headache that is at or above the level it was at in Sept/Oct of last year, and it is now accompanied with odd sense of dizziness/vertigo/balance issues. Neurologist claims there should be no poor interaction between heat/autoregulatory functions and the amitriptyline, PCP said that the small dosage I am taking should not have been an issue, but all the same, if I am going to continue playing in the sun, I should take myself off the drug. I am going to an opthamologist this afternoon to get my eyes checked, something I should have done last year anyway due to pre-concussion low light vision issues, but I don't have much hope that this will make my head feel better.
I am so anxious and tired of the emotional roller coaster I have been on since last Sunday, or the last 10-11 months. I fell 95% normal last Saturday, and now today I feel a shell of my former self, it is draining the hope from me like a firehose from a hydrant. It is affecting my relationship, my friends, and my capability to work. I feel on the verge of tears nearly all the time now, the tiniest things set me off. I am scared to death that the heat stress episode has now fried something else in my head. I am sorry to add yet another less than positive post to this forum, but I am tired of being negative about my condition and quality of life around the people that I love. I don't know what else to do at this point. The urge to just run away, anywhere, and just be miserably by myself is overwhelming, despite the obvious realization that it would accomplish nothing.

Thanks,
Here's hoping there is an answer for me, and you, somewhere.