allergic reaction

seen mainly in young women, often as an allergic reaction to food or drugs

n an allergic reaction that becomes apparent in a sensitized person only minutes after contact

n antihistamine (trade name Benadryl) used to treat allergic reactions involving the nasal passages (hay fever) and also to treat motion sickness

n an antihistamine (trade name Periactin) used to treat some allergic reactions

small scales from animal skins or hair or bird feathers that can cause allergic reactions in some people n