I suggest you go to a neuromuscular specialist at a large teaching hospital. MG is so rare most local neuro have never seen it. Definitely ask for the single fiber EMG.

A hysterectomy brought on my MG. Surgery is often a trigger. How do you respond to the heat? Most MGers get much worse in the heat, even a warm bath. I can't even wash dishes or fold hot laundry.

I get the profuse sweating when I am extremely weak. I look like I just washed my hair. It is like the profuse sweating before you pass-out. But I have never actually fainted. Although I have fallen several times.

Have they tried Mestinon to see how you react?

Good luck
kathie