Our team of professionals and staff believe that informed patients are better equipped to make decisions regarding their health and well-being. For your personal use, we have created an extensive patient library covering an array of educational topics, which can be found on the side of each page. Browse through these diagnoses and treatments to learn more about topics of interest to you.
As always, you can contact our office to answer any questions or concerns.
- What is a Dermatologist?
- Anatomy of the Skin
- Skin Care Topics
- Skin Conditions
- Skin Growths
- Skin Infections
Also called urticaria
Hives are welts on the skin that often itch. These welts can appear on any part of the skin. Hives vary in size from as small as a pen tip to as large as a dinner plate. They may connect to form even larger welts.
A hive often goes away in 24 hours or less. New hives may appear as old ones fade, so hives may last for a few days or longer. A bout of hives usually lasts less than 6 weeks. These hives are called acute hives. If hives last more than 6 weeks, they are called chronic hives.
Acute hives often result from an allergy, but they can have many other causes.
The medical term for hives is urticaria (ur-tih-CARE-ee-uh). When large welts occur deeper under the skin, the medical term is angioedema (an-gee-oh-eh-dee-ma). This can occur with hives, and often causes the eyelids and lips to swell.
If this occurs, the person needs emergency care right away.
Image used with permission of the American Academy of Dermatology National Library of Dermatologic Teaching Slides.