Search our Database of Scientific Publications and Authors

I’m looking for a
    Dermatoscopy in the diagnosis of tinea nigra.
    Dermatol Online J 2008 Aug 15;14(8):15. Epub 2008 Aug 15.
    Universidade Federal Fluminense, Hospital Universitário Antônio Pedro, Serviço de Dermatologia, Niterói, Rio de janeiro, Brazil.
    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.

    Similar Publications

    [Tinea nigra palmaris: a clinical case in Argentina].
    Rev Argent Microbiol 2007 Oct-Dec;39(4):218-20
    Laboratorio Central, Sección Microbiología, Hospital Alemán, Ciudad Autónoma de Buenos Aires, Argentina.
    A clinical case of a female patient with a black spot on the palm of her left hand is presented. The infection was due to a black fungus identified as Hortaea werneckii, the aetiological agent of tinea nigra palmaris. This infection can be easily diagnosed and it is important to establish the differential diagnosis from other skin pathologies. Read More
    Tinea nigra: report of two cases in infants.
    Pediatr Dermatol 2003 Jul-Aug;20(4):315-7
    Complexo Hospitalar Padre Bento de Guarulhos, São Paulo, Brazil.
    Tinea nigra, a relatively uncommon mycosis caused by Phaeoannelomyces werneckii, is typically seen as an asymptomatic brown or black macule on the hands and feet. We present two cases of tinea nigra in children in São Paulo, Brazil, and alert readers to the potential for confusion with melanocytic lesions. Read More
    Tinea nigra palmaris: differentiation from malignant melanoma or junctional nevi.
    Cutis 1998 Jul;62(1):45-6
    Baylor College of Medicine, Houston, Texas, USA.
    Tinea nigra usually presents as a brown to black macule on the palmar or plantar skin and is sometimes misdiagnosed as a malignant melanoma or as a junctional nevus, prompting unnecessary surgical procedures and anguish for the patient. Superficial scraping of the skin for microscopic inspection with potassium hydroxide reveals pigmented hyphae, easily confirming the diagnosis of tinea nigra. Read More
    Tinea nigra presenting speckled or "salt and pepper" pattern.
    Am J Trop Med Hyg 2014 Jun;90(6):981
    Department of Dermatology, University of Vale do Itajaí (Univali), Itajaí, SC, Brazil; Department of Pharmaceuticals-Biochemistry, University of Vale do Itajaí (Univali), Itajaí, SC, Brazil; Department of Dermatology, Botucatu School of Medical, Universidade Estadual Paulista "Júlio de Mesquita Filho"-São Paulo, State University (FMBUNESP), Vital Brazil Hospital, Butantan Institute, São Paulo, SP, Brazil.
    A 7-year-old Caucasian female resident of the southern coast of Brazil presented dark spots on the left palm that converged to a unique macule with speckled pattern at about 1 month. The mycological exam and the fungi culture were typical of Hortaea werneckii, the agent of the superficial mycosis Tinea nigra. The patient received butenafine hydrochloride 1% for 30 days, resulting in a complete remission of the lesion. Read More