I have been experiencing the following symptoms every few months for the past 30+ years:
Pain, tenderness and swelling of the scalp, eye, nose, gums, throat and face, teary eye and runny nose. BUT all of this only happens on one side of my head/face at a time. I have never been to the doctor because it seems so silly and is usually only a nuisance (3-4 on the pain scale.) I would firmly believe it was all in my mind if it weren't for the visible swelling and tearing. Any ideas on what it might be?