Allergy to p-phenylenediamine (PPD) was described in a 51 year old nonatopic female milk tester exposed daily to the chemical in her laboratory work. After 11 years of frequent manual contact with a 2% aqueous solution of PPD, she developed dermatitis on her hands, with occasional spreading to her arm and upper chest. She was given standard patch tests, which revealed hypersensitivity to PPD.
Contact Dermatitis, 33(2):138, 1995. (3 references)
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