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Article
November 1978

Allergic Contact Photodermatitis to Para-aminobenzoic Acid

Author Affiliations

From the Department of Dermatology, University of California, San Francisco Medical Center.

Arch Dermatol. 1978;114(11):1665-1666. doi:10.1001/archderm.1978.01640230039010
Abstract

• Allergic photocontact dermatitis developed in a patient to a commercial sunscreen preparation containing paraaminobenzoic acid (PABA) in an alcohol base. Photopatch testing showed photosensitivity to PABA. Sensitization could only be detected when PABA was tested in an alcohol vehicle; a photopatch test to PABA in petrolatum was negative.

(Arch Dermatol 114:1665-1666, 1978)

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