myasthenia gravis
"I am a 49 year old white male that was diagnosed with Myasthenia Gravis just after my 47th birthday. It took 7 years of various tests before I was finally diagnosed. Mestinon side effects for me was hot flashes, diarrhea so bad that I often wondered which was worse; MG Symptoms or the Mesinon Side Effects. I did however tolerate it and learn to adjust dosage so I could go hiking."