Physio is treating neck pain/stiffness and although they can't directly treat concussion symptoms (per say), it certainly has an indirect impact and I notice that the dizziness and neck pain subsides to about 30% of that prior to walking in, however temporary and if I go 2-3 days without treatment I'm back to square one.

I have another appt with my GP on Wed and wondering if a Chiropractor referral would be something to explore (covered by auto insurance as well)? I've read several articles online explaining the association of the neck (upper cervical) to vertigo and dizzy like symptoms if damaged and a lot of cases can apparently be corrected with treatment, if in fact that's what the issue is.

I'm too new to post links, but search*edit* which elaborates more on the neck part. Don't know how reliable this is, but an example of what I've read.

I suspect in my case that my primary issue is 2 severe concussions in a short period of time and mostly PCS symptoms, but if I can experience some relief seeking various treatment and covered by my auto insurance company, I'd be crazy not to explore options, as long as they don't make me worse.