My daughter, 19, has been suffering for the past few days with some sort of allergic reaction, or that is what we think it is, that causes clusters of small red bumps that are close together that itch, then they go away. Some of the bump clusters actually swell to resemble multiple mosquito bites in one given area. At any given time the bumps can appear on multiple areas including the palms of her hands, her legs, her ears, some around her mouth, her torso, etc. She has taken benadryl but the condition persists. Any clue?