A Sycamore Ventures Company

Hives

Hives are usually an allergic reaction to food or medicine. They are raised, often itchy red welts on the surface of the skin.

When you have an allergic reaction to a substance, histamine and other chemicals are released into your bloodstream, causing itching, swelling and other symptoms.

Hives are a common reaction, especially in people with other allergies like hay fever.

When swelling or welts occur around the face, especially the lips and eyes, it is called angioedema; swelling from angioedema can also occur around your hands, feet and throat.

Many substances can trigger hives:

Read More