This thread shows a possible inflammatory marker in MG.

http://neurotalk.psychcentral.com/thread211489.html

When muscles are weak, they can cramp or spasm. That causes pain! It's a secondary symptom of MG, one which doctors often don't acknowledge.

Think of a marathon runner or other athletes and how their muscles can get tight, cramp, or spasm. It just happens sooner in MG.

Sadiecl, Have you had your thyroid checked? The icy cold, etc. sounds more thyroid related to me. Or circulatory. Or not enough oxygen.

Don't assume the pain is MG, though. You might want your thyroid and B12 checked as well.

Annie