Overview

Hives are raised, red, itchy patches of skin. They usually have red borders and pale centres. Hives range in size from ½ centimetre to 8 centimetres (¼ inch to 3 inches) or more across. They may seem to move from place to place on the skin. Several hives may form a large area of raised, red skin.

Hives are an allergic reaction of the skin. They can happen because of a reaction to medicine, food, or infection. Other things can also cause hives. But sometimes the cause is unknown.

You cannot spread hives to other people.

How can you care for yourself at home?

• Many times hives are caused by something you can't avoid, like a virus or bacteria, or you may not know the cause. But if you think they were caused by a certain food or medicine, avoid it.
• Stay away from strong soaps, detergents, and chemicals. These can make itching worse.
• Put a cool, wet towel on the area to relieve itching.
• Take a non-drowsy antihistamine, such as loratadine (Claritin), to help stop the hives and calm the itching. Be safe with medicines. Read and follow all instructions on the label.