Pigmented purpuric contact dermatitis from DISPERSE BLUE 106 (cas 12223-01-7) and 124 dyes
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Add time:08/04/2019 Source:sciencedirect.com
The diagnosis of purpura pigmentosa progressiva in a female patient had to be changed to purpuric contact dermatitis after patch testing with textile dyes. A modified patch test performed in the area in which most of her skin lesions were located revealed a petechial reaction to the azo dye Disperse Blue 124/106. For evaluation of purpura pigmentosa progressiva we suggest a patch test with potential allergens, and, especially for textile dyes, a patch test at the lesion site may be helpful. (J Am Acad Dermatol 2001;45:456-8.)
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