Yeah, it wears you down and kicks the immune system into overdrive... with all the antibodies it can kick out severely aggravating MG. Mine was caused by complications due to radiation therapy (burns on my lungs) combined with a cold that I had picked up during radiation.

I was very tired and had a persistent cough that was just not going away. I was bringing up lots of green/yellow gunk. Obviously, my MG symptoms were much (*much*) worse. I lost even more weight while dealing with the worsened MG symptoms which has complicated my recovery.

I was hospitalized for 2 & 1/2 weeks for it and the complications that went with mine. I just finished 4 weeks of antibiotics yesterday and I finish my prednisone (for the burns on the lungs) in 2 days.