i have had this problem for the last 9 months. It usually happens on a wednesday or thursday, between 1-4am and lasts about 2-5 hours. I wake up profusely sweating and have a migraine headache. My body will start to shake uncontrollably, especially my arms and legs and start to have diarrhea and violent vomiting. I have seen my dr and she doesnt think it is a big deal since its so sporadic. she gave me tramadol and anti-nausea drug but since i dont know when it is going to happen its a total crap shoot to get that right. I cant take it when my symptoms start because i cant keep it down. has this ever happened to anyone? I am at the end of my rope.