Where Do Hives Come from?

Answer

Hives, also known as urticaria, are often caused by allergic reactions. If it is chronic, meaning it lasts more than six weeks, it may have a different cause. They are also caused by certain autoimmune reactions.
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Hives
Hives, also known as urticaria, are itchy, raised welts that are found on the skin. They may be red and painful to touch. In most cases, hives are caused by an adverse reaction to medication or an allergic reaction to an irritant. Hives may disappear or reappear over the course of the outbreak. Individual hives can last anywhere from half an hour to a day and a half. More »
Source: healthline.com
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