IPL .....side effect or allergic reaction?

Your reaction is most likely related to the IPL treatment. IPL will heat up the browns and reds in the skin, and this will sometimes create small areas of inflammation that can look like little bumps. I agree with the use of an antihistamine. Your skin should look completely normal within a few days.Andrew Campbell, M.D.Facial Plastic SpecialistQuintessa Aesthetic Centers

Please post photos or see your physician as a formal consultation is needed to get an opinion.  Best, Dr. Emer.

I personally prefer to see any patient who is experiencing an unusual reaction personally. If there is swelling oral Bromelain,pineapple enzyme, two capsules three times a day can be very useful in decreasing swelling within one to two days.

IPL side effects are mostly expected with aggressive treatments most of which resolve over 24-72 hours. I agree with the use of antihistamines and follow up with the treating physician.BestDr. Karamanoukian#RealSelf100 Member

Please post a photo, so we can better respond to your question.  In my practice, I do see some patients who have a profound swelling and redness for a few days after IPL.  For those, I tend to use antihistamines (like benadryl) and perhaps a steroid dose-pack for the most severe reactions.  They always resolve.Warmly,Dr. Kavali