title: Pigmented purpuric contact dermatitis from Disperse Blue 106 and 124 dyes.
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.
authors.affiliation: Department of Environmental Dermatology and Venerology, University of Graz, Austria.
authors.forename: P
authors.initials: P
authors.lastname: Komericki
authors.forename: W
authors.initials: W
authors.lastname: Aberer
authors.forename: E
authors.initials: E
authors.lastname: Arbab
authors.forename: Z
authors.initials: Z
authors.lastname: Kovacevic
authors.forename: B
authors.initials: B
authors.lastname: Kränke
mesh_terms: D000485:Allergens / Q000009:adverse effects*; D001391:Azo Compounds / Q000009:adverse effects*; D017449:Dermatitis, Allergic Contact / Q000175:diagnosis* / Q000209:etiology / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D011695:IgA Vasculitis / Q000175:diagnosis* / Q000209:etiology / Q000473:pathology; D007866:Leg; D008875:Middle Aged; D010328:Patch Tests
chemical_list: D000485:Allergens; D001391:Azo Compounds; C069319:Disperse Blue 124; C049175:disperse blue 106