title: Regional dermatoses in the African. Part I. Facial hypermelanosis.
abstract: Acquired facial hyperpigmentation is a common problem among African patients, particularly women, where the causes of the dermatoses are identified largely from circumstantial evidence of exposure to known agents. These include hydroquinone-induced exogenous ochronosis from skin-bleaching creams, mercury deposits from mercury-containing skin-lightening soaps and creams, sulfonamide-related drugs, antimalarials, fixed drug eruptions, clofazimine, and photosensitizing herbal concoctions. The differential diagnosis includes melasma and facial erythema ab igne (local cooks).
authors.affiliation: Department of Medicine, College of Medicine, University of Lagos, Nigeria.
authors.forename: Y M
authors.initials: YM
authors.lastname: Olumide
authors.forename: B D
authors.initials: BD
authors.lastname: Odunowo
authors.forename: A O
authors.initials: AO
authors.lastname: Odiase
mesh_terms: D000349:Africa / Q000208:ethnology; D009783:Dermatitis, Occupational / Q000209:etiology; D005148:Facial Dermatoses / Q000139:chemically induced / Q000208:ethnology*; D005260:Female; D006801:Humans; D010859:Pigmentation Disorders / Q000139:chemically induced / Q000208:ethnology*