Myasthenia Gravis Support Group
Myasthenia gravis (MG) is a neuromuscular disease leading to fluctuating muscle weakness and fatiguability. The hallmark of myasthenia gravis is muscle weakness that increases during periods of activity and improves after periods of rest. Although myasthenia gravis may affect any voluntary muscle, muscles that control eye and eyelid movement, facial expression, and...
The EMG test is different--just trying to see how much signal gets through the wrist to hand rather than with MG trying to see how quickly a message to a muscle receptor decreases with repetition (fatigues).
As our problem is we tire quickly with repetitive motions (i.e. my fingers wouldn't work for more than a line of text on the computer when MG was worst without mestinon), it would be pretty hard to overwork them leading to injury. I suppose things like using a cane might cause a problem. However, I really haven't heard of a cause effect relationship or even a correlation with MG (and can't find any research that indicates that).
Good Luck
I also had neck problems and that was fixed by higher screen, video glasses so that I sat with my head directly above my shoulders rather than leaning into the screen. "Your head is a bowling ball--leaning forward means your neck muscles have to support it; sitting straight up with straight up makes use of the spine and bones instead of muscles...." was what I was told. The video glasses and screen were all set to focus best at the most optimal head position. Those ergonomics folks at Mayo really knew what they were doing. With MG, it is even more important to get the optimal settings for desk, computer, etc.