Hi Dear, Welcome to HCM. Understanding your concern. As per your query you have symptoms of severe hives occurring frequently which occurs when body give response to some external stimuli or some kind of allergen. They are usually harmless until they cause problem like breathing problems, swallowing problems. Introduction of allergen to skin cause release of some chemical which make the skin to as well. Need not to worry. I would suggest you to give cold compresses to reduce itchiness . give cold compresses several times a day. Consult dermatologist for proper diagnosis . Doctor may prescribe steroid therapy. Until then continue taking antihistamine drug. To find out the trigger factor which is a complicated thing, prevention of hives is the best thing one can do. You should try to avoid the trigger factor Hope your concern has been resolved. Get Well Soon. Best Wishes, Dr. Harry Maheshwari