Hives

Hives (urticaria) are an allergic reaction of the skin. Hives are raised, red, itchy patches of skin (wheals or welts), often fluid filled, that may appear and disappear at random. They range in size from less than a quarter inch to an inch or more, and they may last a few minutes or a few days.

Multiple hives often occur in response to a drug, food, or infection. A single hive commonly develops after an insect sting. Other possible causes include plants, inhaled allergens, stress, cosmetics, and exposure to heat, cold, or sunlight. Often a cause cannot be found. If possible, avoid foods, medications, and insects that have previously caused hives.

Home Treatment

Continue to avoid the substance that causes hives.

* Cool water compresses will help relieve itching. Also see page 134.

An oral antihistamine (Benadryl, Chlor Trimeton) may help treat the hives and relieve itching. Once the hives have disappeared, decrease the dose of the medication slowly over five to seven days.

When to Call a Health Professional

Call immediately if hives occur with dizziness, wheezing, difficulty breathing, tightness in the chest, or swelling of the tongue, lips, or face,

If hives persist for several days despite home treatment and avoiding the suspected irritants.