title: Contact urticaria and allergic contact dermatitis caused by paraphenylenediamine.
abstract: The following report describes a patient who had both an immediate and a delayed reaction to paraphenylenediamine (PPDA).
mesh_terms: D000328:Adult; D003877:Dermatitis, Contact / Q000209:etiology*; D009783:Dermatitis, Occupational / Q000139:chemically induced*; D005260:Female; D006202:Hair Dyes / Q000009:adverse effects; D006801:Humans; D010655:Phenylenediamines / Q000009:adverse effects*; D014581:Urticaria / Q000139:chemically induced*
chemical_list: D006202:Hair Dyes; D010655:Phenylenediamines; C029728:4-phenylenediamine