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Hives are red welts that appear on the skin. Hives are a common phenomenon.
Causes. Most often hives are caused by an allergic reaction to a drug or food, although in many cases the cause remains hidden. Allergic reactions in the body release chemicals that cause the skin to swell and hives to form. People who have other allergies are more likely to get hives. Other causes include infections and stress. Hives rarely affect the elderly or children.
Characterized by red welts that usually go away within a few hours.
Treatment. Hives usually disappear spontaneously, but if the case is serious, it is possible that medications or injections are required. In rare cases, allergic reactions can cause dangerous swelling in the airways and make breathing difficult, which is a serious and urgent case.
