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Acute hives can last less than a day, or up to six weeks. Acute hives can be a reaction triggered by coming in contact with an allergen such as a food, animal ... Jul 6, 2019 ... Viral infection is the most common cause of hives that can last days to weeks. The body gets excited about fighting the infection and begins ... Urticaria is characterised by very itchy weals (hives), with or without surrounding erythematous flares. The name urticaria is derived from the common European ... Key points about hives in children · Hives is a problem in which red, itchy, and swollen areas show up on the skin. · Causes of hives include food, medicines, ... Hives (the common term for urticaria), are pink or red itchy rashes, that may appear as blotches or raised red lumps (wheals), on the skin. Hives look like raised pink spots with pale centers on the skin. The spots range from 1/2 inch to several inches wide (hives often look like mosquito bites). Aug 5, 2024 ... Hives are usually triggered by some kind of exposure. The most common ones are to medicines and to foods. But they can be to all kinds of ... It can be triggered by many substances or situations and usually starts as an itchy patch of skin that turns into swollen red welts. Jun 15, 2024 ... What are hives in dogs? Also referred to as urticaria or wheals, hives are small, red, raised bumps that show up on a specific area of a dog's ... Jun 20, 2024 ... Hives (or urticaria) is an itchy rash caused by tiny amounts of fluid that leak from blood vessels just under the skin surface.