Basically, an MG crisis is a potentially life threatening incident experienced by someone with MG who gets so weak that they are unable to properly breathe well on their own. It can come on fairly quickly - - but usually the MG'er realizes in retrospect that there were warning signs -- they were just ignored.....until they couldn't be ignored any more. At that point the individual ends up in ER and is often admitted. Sometimes respiratory support in necessary.

I've never had a 'crisis'-but I have been guilty of doing more than I should have and paying for it with a few days flopped on the couch! I'm VERY lucky that my MG is not at all severe and I am able to get by on Mestinon alone. Others here can give you some first hand 'crisis' stories. It's very scary and can be quite dangerous.