Have you seen an allergist for it? My allergist prescribed Singulair, Cimetidine twice a day, Xyxal and those have help me a lot. I also stay away from things I know I’ll have an allergic reaction to

Avoiding triggers is the main thing…stress, high histamine foods, alcohol…you kind of have to learn your triggers and avoid them to have the best chance at avoiding a flare up.

Keep a food journal and avoid any and all triggers. Also, carry an antihistamine and Epi Pen with you (if you’re prescribed one) at all times. If you haven’t seen an allergist, I highly recommend that you do to see if they can narrow down your allergies. Request skin and blood testing as both can produce different results. Also, wear a medical ID bracelet in case you can’t response after a reaction so medical response teams know your history.