Hives |
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DESCRIPTION
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Hives, known medically as urticaria (UR-tih-KARE-e-uh), is an allergic reaction appearing on the skin. The problem may disappear quickly or last for months or years.
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CAUSES
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The reaction can be caused by medicines, pets, foods, insect bites, or infections. Cold, heat, sunlight, exercise, and water may also produce hives in susceptible individuals. Hives tend to run in families.
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SYMPTOMS
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The reaction produces red, itchy, swollen bumps called wheals that quickly change in size, shape, and location. The wheals may come and go in minutes or last for hours. In some people, they are accompanied by more serious allergic symptoms. Hives cannot be spread from person to person.
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CARE
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Medicine may relieve the itch and irritation and prevent more hives from developing. If you suffer violent allergic reactions, you may need to keep an emergency medicine kit with you at all times.
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