hey, im so sorry to hear what happens..life sucks!
something in the crash obv triggered your head probs......you should push for more help from neurologist....somebody must know! altho sometimes, just surfing the net gives you more answers. i have some of same symtons as you, altho i cant pinpoint what triggered mine. i have constant headache, get tierd easily and sicky. had CT scan, was all clear....tried physio, chiropractor, eye hospital and nueologist.....no answers! have all refered me back to GP, who is no help! currenly taking propanalol.........have u tried that???? or massage oil on ur temples???xx