You should check out this website, http://www.beyondthelimits.net/index.html. It contains a book written by a gentleman with myasthenia gravis. It is very interesting. In the book, he talks about the many people with MG that he has met and how many of them are Type A personalities. He has done a lot of research and has his own theories that chemicals released (adrenalin, etc) might contribute somehow to myasthenia.

He also talks in depth about how he learned to manage his days to do his best. He has passed away now, not from MG, but his son still maintains the site. My son is a research scientist in brain research. I know from him not to discount things such as this. Very interesting book!