UrticariaAll Conditions »
Urticaria (Hives) and Angioedema (Swelling):
Hives are raised, red, itchy areas of the skin that may be of various sizes and locations on the body. Swelling is from hiving in the deeper layers of the skin. Acute hives may be from a number of factors such as food allergy, bee stings, infections and drug allergies. Hives that have lasted more than 3 weeks (chronic) are usually caused by an immune-regulatory disorder and not by an external factor.
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