Hi ,
Has he ever considered seeing a expert chiropractor?
I just wonder if since he had a head trauma if some of his sx might be caused by misalignments...
I"ll post some links that will explain it better than I can.

Chiropractic care info- a good one can help with many symptoms:
http://www.upcspine.com/self.htm
http://www.uppercervical.org/subpag...b/about_faq.php
http://www.spineuniverse.com/index.html
http://www.coloradochiropractic.org/.../glossary.html

and a chart -
http://neurotalk.psychcentral.com/post284498-35.html