When I was first diagnosed I had times I couldn't hold my head up and got a neck brace. I also had painful muscle spasms. It now seems to be ameliorated by Gabapentin, but I still have muscle weakness as well as stamina and balance issues. If I push myself too much I can't stand up straight. I was disheartened to find on this site the symptom monitor did not address these issues, but I'm convinced they are MG related. It has been a drastic change since before I had this condition.