I have read a lot of posts regarding hospitalization for breathing issues with MG crisis. I have a history of asthma for the past 40 years. I am still waiting on the neurologist appointment to get a definitive diagnosis of MG. Most of my symptoms are weakness in the leg muscles and the droopy eye, plus the tripping and stumbling. I have noticed some wheezing lately. Are their certain signs and symptoms that signal a breathing crisis coming on? How fast is the onset of crisis? Just trying to know what to expect.