Westerhof, W Pigmented lesions of the tongue in heroin addicts--fixed drug eruption. [electronic resource] - The British journal of dermatology Nov 1983 - 605-10 p. digital Publication Type: Case Reports; Journal Article ISSN: 0007-0963 Standard No.: 10.1111/j.1365-2133.1983.tb07686.x doi Subjects--Topical Terms: AdultHeroin--adverse effectsHeroin Dependence--complicationsHumansMaleMethaqualone--adverse effectsPigmentation Disorders--chemically inducedTongue--pathologyTongue Diseases--chemically induced