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BCM - Baylor College of Medicine

Giving life to possible

Baylor Dermatology Clinic

Patch Testing for Skin Allergies

The Baylor Contact Dermatitis Clinic was established to help those patients who suffer from skin allergies. Persons may develop allergies to ingredients in skin care products, ingredients in cosmetics, topical medications, chemicals in clothing, jewelry and metals, and other substances. When these substances contact the skin, they may result in a rash known as contact dermatitis. Contact dermatitis may result in a variety of different rashes. These include, but are not limited to, eczema, hand eczema, eyelid dermatitis, facial rashes, and others.

The Baylor Contact Dermatitis Clinic performs patch testing to diagnose the cause of skin allergies. Such testing is distinct from the prick testing performed by an allergist to diagnose hay fever or breathing allergies. In patch testing, small amounts of substances are placed in patches and applied on the back for 48 hours. No needles are used. A reading is then done to see if any skin allergies exist.

Additional Information

The clinic is run by Dr. Rajani Katta, an active member of the American Contact Dermatitis Society. Dr. Katta is a graduate of Baylor College of Medicine and completed her dermatology training at Northwestern University. She lectures frequently and has published multiple articles on the topic of contact dermatitis.