Skinmed 2006 Jul-Aug;5(4):201-3
Department of Dermatology, Baylor College of Medicine, Houston, TX 77005, USA.
A 48-year-old white woman presented with the abrupt onset of an asymptomatic but cosmetically distressing eruption on the palm. Physical examination disclosed a 2.5 x 2.0-cm macular brown patch on the central left palm (Figure 1). Potassium hydroxide examination revealed brown-pigmented, septate, branching filamentous hyphae. Clinical and microscopic findings were classic for tinea nigra palmaris. Medical, family, and social history were all unremarkable. The patient applied ciclopirox olamine gel, 0.77% b.i.d. for 3 days. Following this brief therapeutic intervention, the lesion resolved completely (Figure 2). She remained clear during the ensuing 14-month follow-up.