An allergic reaction to medicine can cause hives.
They appear as raised, red, itchy bumps (wheals) of different shapes and sizes,
with defined red margins and pale centers. Hives may appear and then disappear
at random and seem to move from place to place on the skin.
ByHealthwise Staff Primary Medical ReviewerAdam Husney, MD - Family Medicine Specialist Medical ReviewerRohit K Katial, MD - Allergy and Immunology