Table of Contents
- Overview
- Symptoms
- Treatment
- Prevention
- Images
Urticaria
Symptoms
Itching - Swelling of the surface of the skin into red- or skin-colored welts (called wheals) with clearly defined edges
The hives may get bigger, spread, and join together to form larger areas of flat, raised skin.
They can also change shape, disappear, and reappear within minutes or hours. A true hive comes and goes. When you press the center of one, it turns white. This is called blanching.
Signs and tests
Your doctor can tell if you have hives by looking at your skin.
If you have a history of an allergy, then the diagnosis is even more obvious.
Occasionally, skin or blood tests are done to confirm that you had an allergic reaction and to test for the substance that caused the allergic response. A skin biopsy can confirm the diagnosis.
Images
Previous Section
Review Date: 05/13/2011
Reviewed By: Kevin Berman, MD, PhD, Associate, Atlanta Center for Dermatologic
Disease, Atlanta, GA. Review provided by VeriMed Healthcare
Network. Also reviewed by David Zieve, MD, MHA, Medical Director,
A.D.A.M., Inc.
A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)
