Had the same onset – small hurricane on Mississippi Gulf Coast went through to major gMG in 24 hours due to stress (previous house destroyed in a major storm). Symptoms, after several years of IVIg and other infusions, have been reduced but flare up during the summer on the coast. The role of mental/emotional stress and its control without too many more drugs needs to be researched and reported on. My most volatile and sensitive symptom is diplopia, which prevents driving.