This sort of condition usually is not allergic. The fact that your allergist has not found an allergy in your case suggests that you aren't allergic. This swelling usually comes and goes for no reason, and eventually may well just burn itself out and stop on its own. meantime, non-sedating antihistamines like Allegra or Clarinex might be worth trying, as part of your "cocktail." Ask your doctor. And don't be discouraged--for the most part, this is just an annoyance.
Best.
Dr. Rockoff
tablet 10mg when it happens and after about 6 to 8 hours it goes away. But it's scary. My doctor doesn't think there is anything that can be done! I don't know what to do or how to find out what it is thats causing it to happen.