title: [Black hairy tongue].
authors.affiliation: Servicio de Dermatología, Hospital Central de la Cruz Roja, Madrid, España.
authors.forename: Guillermo
authors.initials: G
authors.lastname: Guhl
authors.forename: Blanca
authors.initials: B
authors.lastname: Díaz Ley
mesh_terms: D000287:Administration, Topical; D006801:Humans; D008297:Male; D008875:Middle Aged; D009067:Mouthwashes; D009910:Oral Hygiene; D012907:Smoking / Q000009:adverse effects*; D016540:Smoking Cessation; D017693:Sodium Bicarbonate / Q000008:administration & dosage / Q000627:therapeutic use; D014064:Tongue, Hairy / Q000188:drug therapy / Q000209:etiology* / Q000628:therapy; D014212:Tretinoin / Q000008:administration & dosage / Q000627:therapeutic use
chemical_list: D009067:Mouthwashes; D014212:Tretinoin; D017693:Sodium Bicarbonate
vernacular_title: Lengua negra vellosa.