title: Terra firma-forme dermatosis.
abstract: Terra firma-forme dermatosis (TFFD) is a relatively common but usually unrecognized clinical problem. The cause is unknown. The changes usually occur on the neck in childhood as dirty brown patches that cannot be removed with soap but are easily removed with alcohol. Terra firma-forme dermatosis may be mistaken for acanthosis nigricans.
authors.affiliation: Geelong Hospital, Victoria, Australia.
authors.forename: T J
authors.initials: TJ
authors.lastname: O'Brien
authors.forename: A P
authors.initials: AP
authors.lastname: Hall
mesh_terms: D000052:Acanthosis Nigricans / Q000175:diagnosis* / Q000503:physiopathology; D000287:Administration, Topical; D000293:Adolescent; D000438:Alcohols / Q000008:administration & dosage*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D017495:Hyperpigmentation / Q000188:drug therapy* / Q000209:etiology*; D009333:Neck
chemical_list: D000438:Alcohols