Hi, and welcome to NT! This is such a great place with so many friendly, caring, and helpful people.
We're glad you found us!
I'm going to take a shot here and guess that MG is Myasthenia Gravis. Below is a link to the forum. If not, let me know and I or someone else would be happy to direct you where you need to go.
http://neurotalk.psychcentral.com/forum77.html