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Dermoscopy case of the month
Tinea nigra dermoscopy: A useful assessment

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Clinical presentation

A 17-year-old boy presented with a 7-mm brown macule on the fourth finger on his right palm evolving for 6 months, with clearly defined margins and no associated complaints (Fig 1).

Dermoscopic appearance

Dermoscopic examination found a brown, fine-dotted, and granular structure overlapping an amorphous light brown macule. These wispy brown strands, or pigmented spicules, represent pigmented hyphae in the stratum corneum. Like almost all other case reports, the pigment did not follow or respect the dermatoglyphic furrows and ridges (Fig 2).

Key message

Tinea nigra (TN) is a superficial fungal infection caused by Hortaea (Phaeoannellomyces) werneckii, formerly called Cladosporium werneckii or

References (4)

  • A. Paller et al.

    Skin disorders due to fungi

  • R.J. Hay

    Tinea nigra

There are more references available in the full text version of this article.

Cited by (0)

Funding sources: None.

Conflicts of interest: None declared.

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