Chronic Urticaria (CU)
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Chronic Urticaria (CU)
Urticaria, or hives, are itchy red welts affecting about 20% of people at some point in their lives. Hives often indicate an allergy to a food or medication and will subside on their own. There are two types of hives: acute and chronic urticaria. Hives that appear for a short period of time are called acute hives. They can last less than a day, or up to six weeks. Chronic hives last longer – 6 weeks or more. Sometimes they go away for a period of time and then come back. There are different types of chronic hives.
















