thank you for the advice!
These shocks are undoubtedly due to the on-the-job injury and should be covered by workman's comp. Make sure you tell the physician this when you visit. Contrary to popular belief you DON'T have to go to any workman's comp. physician for evaluation, and an on-the job injury entitles you to a lifetime of care. That's the good news.
The bad news is there is really no treatment except intermittant axial tyraction, for a few minutes several times a day.
Square one is to get a good 3T MRI of the head and cervical; area. If possible get a PET/MRI. Get in line for a 3T. Usually there are only 1 or 1 1/2 T macines available.
Then you need an attorney. In some states, accepting workman's comp is a covenant not to inittiate a tort action on your own. I believe you have a tort action work several hundred thousand dollars. Keep going to doctor's to report the pain, even if they don't do anything.