Urticaria意思

Urticaria is a skin condition that causes red, itchy bumps on the surface of the skin. It is also known as hives. The bumps can appear anywhere on the body and can vary in size. Urticaria is often caused by an allergic reaction to food, medications, or insect stings, but it can also be caused by stress, heat, or cold. The symptoms of urticaria can last for a few hours to a few days, and in some cases, it can be a chronic condition.