I have experienced the same things that others have written in this forum.I have done some careful research,monitoring everything i've ingested,also I have watched my stress level.Checking my blood pressure and temperature.I believe that this condition varies from one individual to ythe other.Yet,I am no doctor and don't claim to be.I feel my problem is food that I've ingested.I love peanut butter,especially pb&jelly sandwiches.I ate this last evening,before bed and could actually start feeling it swell.Yet,I've never been affected before and I'm 51 years old,I feel one's metabolism could change.I enjoy a couple of drinks before bed,and even thought that this was my problem.But I experimented just to see about the Pb.In my case ,I honestly believe that has what caused it.Has any other reader had this similar problem with peanut butter?