[Glyde 11209]

Hello, getting right to the situation, 5 years ago in 2008 I had a bicycle accident where i flew over the handlebars while going about 20 mph. I landed on my chin, and broke my jaw, cleanly as it happened. all that was need was my jaw to be wired and wait for the jaw to mend.
this was in early July, in early September I started to notice what I thought was itching on my scalp - for the next 2 years I went to a dermatologist who prescribed topical (steroidal) meds, steroid shots, creams, antibiotics, patch tests, skin biopsies, until it was determined (?) that my problem was neurological. for the last three years i have been going to a migrane specialist who is convinced that I have "ice pick" headaches" and prescribed Nortriptyline, which made me sick no matter how long i tried to stay on it and adjust.
I am now going to a neurologist who thinks that the accident did something to the trigeminal nerve in my brain stem and has prescribed Tegretrol. (other meds that I can't tolerate are topomax and any of the trisclaytes)
There are days that for no apparent reason my scalp feels like someone is ramming sewing needles into it, all over. My doctor's position is that the Tegretrol should help (I'm now taking 900mg a day)
This condition is not just a minor nuisance,it is incredibly painful and strikes for no apparent reason.
Any ideas, clues, thoughts?
thank you....