I get large red welts that itch terribly on buttock, bottoms of feet, wrists and abdomen. Usually, in different places at different times. I can the an antihistamine for about 3-4 days and they calm down for about a week and come back. The ones on the feet are on the bottom of the foot. They sweet and feel like I m walking in a pad. Itch terribly and all are extremely red. They are anywhere between 4-8 large. Almost a year since this has started.