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  • Title: Pigmented purpuric contact dermatitis from Disperse Blue 106 and 124 dyes.
    Author: Komericki P, Aberer W, Arbab E, Kovacevic Z, Kränke B.
    Journal: J Am Acad Dermatol; 2001 Sep; 45(3):456-8. PubMed ID: 11511847.
    Abstract:
    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.
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