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What is acute urticaria?

April 26, 2017acute ALLERGIC allergies ALLERGY Hive Hives urticaria weal

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What is acute urticaria?

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Urticaria (sometimes called hives) is an itchy rash caused by tiny amounts of fluid that leak from blood vessels just under the skin surface. Urticaria is classed as: • Acute urticaria – if it develops suddenly and lasts less than six weeks. Most cases last 24-48 hours. About 1 in 6 people will have at least one bout of urticaria in their life. It can affect anyone at any age. Some people have recurring bouts of acute urticaria. • Chronic urticaria – if it persists longer than six weeks. (Chronic means persistent or ongoing.) This is uncommon. This rest of this leaflet deals only with acute urticaria. There is a separate leaflet for information about chronic urticaria.