Hello GP {we usually shorten names around here LOL},

Nice to meet you, and I hope we can be of help.

What was your original injury from the car accident, and what parts of your body were injured?

You've been to both neurosurgeons & neurologists?
Any physiatrists? {rehab docs}

The spells are something I don't recall seeing mention of on the RSD forums... so that might be something else...

Hopefully as others see your post maybe they will have thoughts on that part of it.

Have you considered looking into expert chiropractors for some of your symptoms? Possibly might be of help for the back problems and maybe the spells also.