and Your Skin Allergic reactions, chemicals in certain foods, insect stings, sunlight exposure, or medications can all cause histamine release. Acute.
Urticaria, also known as hives, is an outbreak of swollen, pale red bumps or plaques (wheals) on the skin that appear suddenly -- either as a result of the body's reaction to certain allergens, or for unknown reasons. Angioedema is similar to hives, but the swelling occurs beneath.
Hives, also known as urticaria, are red and sometimes itchy bumps on your skin. Learn about the hives symptoms, diagnosis and treatment here.
Learn about 10 dermatologist recommendations for getting relief from chronic hives.
Hives can be different sizes and shapes, and appear anywhere on the body in both adults and children. The rash is often itchy and sometimes feels like it's.