title: Allergic contact dermatitis to substitute hair dyes in a patient allergic to para-phenylenediamine: Pure henna, black tea and indigo powder.
abstract: We report a case of a 50-year-old lady with allergic contact dermatitis to para-phenylenediamine, who in her quest to find a substitute hair dye, subsequently reacted to a number of plant-based hair dyes, including pure henna, black tea and indigo powder respectively. While these substances all contain tannins, testing to possible constituents tannic acid and gallic acid was negative.
authors.affiliation: Contact Dermatitis Clinic, Skin and Cancer Foundation Inc., Melbourne, Victoria, Australia.
authors.forename: Bonnie C
authors.initials: BC
authors.lastname: Swan
authors.affiliation: Contact Dermatitis Clinic, Skin and Cancer Foundation Inc., Melbourne, Victoria, Australia.
authors.forename: Mei M
authors.initials: MM
authors.lastname: Tam
authors.affiliation: Occupational Dermatology Research and Education Centre, Skin and Cancer Foundation Inc., Melbourne, Victoria, Australia.
authors.forename: Claire L
authors.initials: CL
authors.lastname: Higgins
authors.affiliation: Occupational Dermatology Research and Education Centre, Skin and Cancer Foundation Inc., Melbourne, Victoria, Australia.
authors.forename: Rosemary L
authors.initials: RL
authors.lastname: Nixon
mesh_terms: D000485:Allergens; D017449:Dermatitis, Allergic Contact / Q000209:etiology* / Q000503:physiopathology; D005260:Female; D006202:Hair Dyes / Q000009:adverse effects*; D006801:Humans; D007203:Indigo Carmine / Q000276:immunology; D031564:Lawsonia Plant / Q000276:immunology; D008875:Middle Aged; D010328:Patch Tests; D010655:Phenylenediamines / Q000009:adverse effects*; D011537:Pruritus / Q000175:diagnosis / Q000209:etiology; D012536:Scalp Dermatoses / Q000175:diagnosis / Q000209:etiology*; D012720:Severity of Illness Index; D013662:Tea / Q000276:immunology
chemical_list: D000485:Allergens; D006202:Hair Dyes; D010655:Phenylenediamines; D013662:Tea; D007203:Indigo Carmine; C029728:4-phenylenediamine
keywords: allergic contact dermatitis; allergy; hair dye; henna; indigo; para-phenylenediamine; patch testing; scalp; tannin; tea