I am sorry you are suffering so much. I have these same sort of problems. I have had over 5 concussions from passing out and falling straight back on cement (this was diagnosed as hypoglycemia). In 2006 I was in a MVA and was knocked out and ever since that time I have had trouble doing the most basic things, have slurred speech at times, light and sound sensitive, Tinnutitis etc. I was able to get in to a really good neurologist/movement disorder specialist and he diagnosed me with post concussive syndrome manifested by cognitive impairment, chronic pain and fatigue. I am going for an MRI tomorrow and a neuropsychological evaluation on the 25th. These were the things recommended to me in order to determine the extent of the traumatic brain damage. Your case sounds similar. With how many concussions you have had. I noticed mild impairment that I had to work around for a long time but the MVA knock out took me down. Maybe you could try the above mentioned things to get some answers. I was just being treated for chronic pain and migraines until I had a seizure and went to some specialists. Good luck to you.
Had MVA in 2006 resulting in post concussive syndrome manifested by cognitive impairment, chronic pain/ fatigue. Chronic pain of head, neck, back, left leg.
Other problems include REM sleep behavior disorder, nocturnal frontal lobe epilepsy, chronic migraines associated with nausea/vertigo, episodes of passing out, hypoglycemia, liver dysfunction (had accidental overdose of acetaminophen in 2009) had liver and kidney failure, hernia, degenerative disc disease with compression of nerve root, PTSD, and other problems associated with functioning problems from traumatic brain injury (light, sound sensitive, easily overloaded, easily distracted, cannot focus, anxiety problems etc.)