It's been over a year for you... has anyone referred you to see an endocrinologist? You should get all of your hormone levels tested because there is new research to indicate that many people who suffer from PCS for over a year have pituitary gland dysfunction caused by the concussion.

I was in a similar auto accident as you.

It took almost 3 years for them to figure out that I had pituitary dysfunction because I pushed for the testing and paid out of pocket to see a specialist with experience with this kind of thing. (The endos that my HMO sent me to wouldn't even order the testing.) I paid out of pocket for the testing and it proves that I need the hormones and now my HMO pays for the treatment.

I'm doing significantly better now than I was before I started the treatment.

Have you had the pressure inside your skull measured? I had an increase of intracranial pressure inside my skull (which is probably what caused the pituitary dysfunction) that caused me a great deal of severe pain for about six months until I had a spinal tap to measure the pressure - which also relieved the pressure entirely. That was about 6 months after the accident I was in.