title: Dermatoscopy in the diagnosis of tinea nigra.
abstract: Tinea nigra is an asymptomatic superficial fungal infection caused by Phaeoannelomyces werneckii, generally affecting the skin of the palms and characterized by deeply pigmented macular non-scaly patches. These lesions are quite characteristic. However, they can be misdiagnosed as a malignant melanoma or a junctional melanocytic nevus and unnecessary biopsies may be performed. Thus, dermoscopy is a fast, useful, clinical adjunctive tool in differentiating tinea nigra from melanocytic lesion.
authors.affiliation: Universidade Federal Fluminense, Hospital Universitário Antônio Pedro, Serviço de Dermatologia, Niterói, Rio de janeiro, Brazil. marcus_hx@hotmail.com
authors.forename: Marcus Henrique de S B
authors.initials: MH
authors.lastname: Xavier
authors.forename: Lúcia Helena S
authors.initials: LH
authors.lastname: Ribeiro
authors.forename: Hélio
authors.initials: H
authors.lastname: Duarte
authors.forename: Giani
authors.initials: G
authors.lastname: Saraça
authors.forename: Angela Cristina L
authors.initials: AC
authors.lastname: Souza
mesh_terms: D000935:Antifungal Agents / Q000627:therapeutic use; D001203:Ascomycota / Q000302:isolation & purification; D002648:Child; D046169:Dermoscopy; D003937:Diagnosis, Differential; D006229:Hand Dermatoses / Q000175:diagnosis* / Q000188:drug therapy / Q000382:microbiology; D006801:Humans; D008297:Male; D008545:Melanoma / Q000175:diagnosis; D008548:Melanosis / Q000175:diagnosis; D008825:Miconazole / Q000031:analogs & derivatives / Q000627:therapeutic use; D003904:Mitosporic Fungi / Q000302:isolation & purification; D012878:Skin Neoplasms / Q000175:diagnosis; D014005:Tinea / Q000175:diagnosis* / Q000188:drug therapy / Q000382:microbiology
chemical_list: D000935:Antifungal Agents; D008825:Miconazole; C020382:isoconazole