What causes hives and how dangerous can they be? A nurse practitioner explains - The Conversation

Hives are an allergic reaction and can sometimes be a sign of a more serious immune response.

Every year, about 20% of Americans will get hives those itchy, red bumps or welts that can appear after a day in the garden, taking medication, being bitten by a bug or for no apparent reason at all.… [+4455 chars]

full article...