Positive patch test reaction
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Positive patch test reaction
Source: National Institute for Occupational Safety and Health (NIOSH), U.S. Centers for Disease Control and Prevention (CDC). Available online: http://www.cdc.gov/
A person’s skin has been tested for allergens. The red, raised itchy area (called a wheal) shows an allergy to balsam of Peru.
Credits
| Primary Medical Reviewer | Caroline S. Rhoads, MD - Internal Medicine |
| Specialist Medical Reviewer | Harold S. Nelson, MD - Allergy and Immunology |
| Last Updated | August 8, 2007 |
| Last updated: | August 08, 2007 |
|---|---|
| Reviewed By: | Caroline S. Rhoads, MD - Internal Medicine, Harold S. Nelson, MD - Allergy and Immunology |
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