rdawes, so sorry that you are having so many problems.

Your symptoms fit MG EXCEPT for the burning, extreme sensitivity, and numbness -- we don't usually have that. Our sensations are typically "normal".
You DEFINITELY have something going on -- and it needs some SERIOUS attention. I don't know what to suggest. Maybe get somebody to look for MS, RA, Chronic Fatigue?? Hoping somebody will pop in here with more suggestions as to what this might be.