It seems that the common issue for many of us is that there's something above the collarbone that impedes something. Blood, spinal fluid, or maybe something pressing on a nerve, whatever it is, it has a negative effect somewhere. It might explain headaches and vision problems above the problem area or neurologic problems below.
So what if at least part of our symptoms are caused by muscle tension in the neck? Both the dentist (TMJ) or the chiropractor might be helpful.
The challenge is to find the right "ist" to fix your personal problem. Neurologist, radiologist, dentist, cranial sacral therapist, the list just keeps getting longer. The bad news is that it just means even more doctors to find and see if they can get results. That takes a lot of time, money and stamina.
But the good news is that, unlike what our neurologists told us, our unique problems could actually be treated, and without expensive, dangerous drugs. While I hate the idea of a scavenger hunt for a doctor, that is vastly outweighed by having hope! That's a critical element that by neurologists never "administered".