Hot weather, exercise, stress, and some foods can cause hives. Hives may last as long as four hours or even as long as a few days before calming down. If you stay away from what's causing your hives, you'll be better off. A doctor can help you figure out why you have hives, and can treat you with pills to help you feel better. It's best to stay out of the sun between 10 a.m. and 4 p.m., when the sun's rays are strongest.
Doctors usually treat it with a special cream or shampoo to help calm the itching and swelling.
American Academy of Dermatology, 2000. All rights reserved. Produced by NetOn-Line Services .