Urticaria (Hives)
Description
A rash that is caused by fluid entering the skin after a localized release of histamine. An allergic reaction is the most common cause. Occasionally they are chronic and recurrent with no known inciting event. They occur singly and in groups and can affect the lips, eyes and other mucous membranes of the body as well as the skin.
Symptoms
Rash consisting of batches of raised, red or white itchy welts. The rash is of different sizes and appear and disappear. Similar swelling and rash may appear in the eyes, mouth and vagina.
Tests
A history and physical exam will be performed. Occasionally allergy testing is done to determine the cause.
Treatment
Avoidance of the cause of the urticaria is important to reduce recurrences. Acute treatment includes: antihistamines and steroids. Severe cases may require epinephrine.
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