I was Dx for MG last year. Yet, twice since 2008, I had extreme fatigue and was sent to 2 different Rheumatologists, who thought I had something called PMR. Bloodwork indicated I did not and after about 11 months, my fatigue subsided. Finally, last year, double vision broke through and I was diagnosed in literally one minute by my ophthalmologist. What I would like to stress is, since the 2 Rheumatologists didn't think it was a rheumatoid disease, why didn't they- as specialists- ask themselves "WHAT ELSE COULD IT BE?" No such luck. Left to wander around since 2008 until I got double vision.