Hives or Urticaria is a rash on the skin that is commonly caused by an allergic reaction. The skin is raised, and itchy and can be rounded or flat topped but it always elevated above the surrounding skin.
Image courtesy of WikipediaHives can also be caused by an allergic trigger. If the hives last longer than six weeks most likely it is not due to an allergy. Hives are usually itchy but they can also burn or sting. They vary in size and can be found anywhere on the skin, including the face, lips tongue or throat. These itchy spots, may join together to form larger areas known as plaques and can last for hours or several days before fading.
According to WebMD, "Hives and angioedema form when, in response to histamine, blood plasma leaks out of small blood vessels in the skin. Histamine is a chemical released from specialized cells along the skin's blood vessels."
Try these great products for relief of the hives:
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