I've never been diagnosed with fibromyalgia, but I do have pains and aches with my MG. My original neuro, more than 30 years ago, who was an MG specialist, and ahead of his time, recognized pain as being a symptom of MG, but not of what he called classical MG. Most neuro's buy into the no pain with MG mentality, though in the very little research that has been done on it, many MGers report pain with their MG. Unfortunately, we usually don't get treated for it because we're not supposed to have it.