Is TLE - Temporal lobe epilepsy ??

Did you get any sort of whiplash in the accident?
If it is a possibility some of your issues can be related to that.
Any arm, hand,neck,shoulder pain?
If so explore our thoracic outlet syndrome (TOS for short) sticky threads..
Triggerpoint and various other therapies might be helpful info for you there.

Have you had x ray or MRI of the c spine to rule out any spine related nerve issues?