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Idiopathic photodermatitis with a positive paraphenylenediamine photopatch test
Archives of Dermatology
|November 1, 1984
Abstract:
A 61-year-old man was seen for a long-standing, recurrent eczematous dermatitis that appeared only in the summer. A patch test with ammoniated mercury was positive. Photopatch reactions to caine mix and paraphenylenediamine were positive, and phototesting disclosed an idiopathic photosensitivity to UV-A. Avoidance of sunlight exposure and the use of chemical sunscreening agents prevented further recurrence of the dermatitis.