South Asian Research Journal of Applied Medical Sciences (SARJAMS)
Volume-7 | Issue-04
Case Report
Tinea Nigra Palmaris in a Pediatric Hispanic Patient
María de los Ángeles Pérez Rodríguez, Ángela Rodríguez Trujillo
Published : July 17, 2025
Abstract
Tinea nigra is a superficial fungal infection caused by Hortaea (Exophiala or Phaeoannellomyces) werneckii. It affects the stratum corneum of the palms and, rarely, the soles, as well as other sites. It is characterized by dark brown or black, well-defined, noninflammatory, hyperpigmented patches covered by very fine scales; it is most often asymptomatic. We present a case of a 4-year-old Hispanic little boy presented with an asymptomatic brownish irregular patch on the left palm for 5 months. Skin examination revealed a dermatosis located on the left hand, on the palmar side, unilateral, consisting of a hyperchromic, bilobed, brown spot, 5 cm in diameter on its major axis by 2.5 cm in the minor diameter, well-defined edges, with a chronic evolution of approximately 5 months and asymptomatic. Dermoscopy revealed a light brown macule with “Brown spicules” forming a reticulated patch. Direct examination shows olive-green pigmented phaeoid filaments, septate, branched, and tortuous. He received treatment with 1% isoconazole cream every 8 hours for 1 month with favorable results