I am double sero-negative as well but have had the basic symptoms for about a year. Those included weakness after muscle usage (legs, hips, hands), voice changing and breathing issues, and finally this past April I got a nasty virus of some sort and all went haywire. I started with extreme weakness after muscle usage, double vision and swallowing problems. The breathing got worse and I could hardly catch my breath when talking to someone.

I was fortunate in that with the symptoms I had and the strong response to a trial of Mestinon that I had a Dx of MG in April, and by just 2 weeks ago had a 5 day series of IVIG. Despite some complications with the IVIG, I have noticed a significant improvement in the symptoms a week after the IVIG was completed.

Joe