--either a central nervous demyelinating condition (such as MS or a related syndrome) or some thing that might involve upper cervical spinal compression of nerve roots or parts of the spinal cord. A compressive peripheral neuropathy such as thoracic outlet syndrome is also a possibility.

Is there any history of either in your past or family? Do you have any recent history of injury?

I'm not a doctor, of course, but the symptom pattern is ambiguous enough that it would be hard to tell if the symptoms are central nervous system vs. peripheral nervous system without imaging (and even that may not tell decisively), as the symptoms of central nervous system problems as opposed t peripheral ones can be exactly the same.

I would think that your physicians would want to get you MRI's of brain and spine quickly, even without being sent to a neurologist first; is there an insurance hold-up with that?