Sorry for the late response. Has that been happening a long time and is it still happening? I'd keep a journal and when it happens, write down everything you ate, drank and did 24 hours prior. If it is a reaction to something, they may help narrow down what it is. Otherwise, you should go first to a dermatologist to see if it is a skin condition and if not, then to an allergist where they can test to see what you are reacting to if you can't figure it out from your own journaling. Check back in and let us know what's up with this situation.