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Chronic urticaria - Definition


Definition


Urticaria, commonly known as hives, is a dermatological condition that is relatively common. It can be acute or chronic, progressing over six weeks or more. In the chronic form, pink or red patches appear on the skin surface over the course of several flare-ups, with some periods totally without any symptom manifestation. These lesions appear abruptly, cause itchiness, and disappear just as quickly. There are many possible causes for chronic urticaria, such as contact with an environmental irritant, usually chemicals; from cold exposure; from pressure exerted on the skin; from physical exertion; from contact with water; or from solar exposure. Different allergy tests can be performed to determine the causative factor for urticaria. Nevertheless, in most cases no agent is definitively found, and we can only treat the symptoms, using antihistamine drugs.
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