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To the Editor.—
Tinea versicolor is a very common superficial fungal infection caused by the filamentous form of Pityrosporon orbiculare. The characteristic, slightly scaling, fawn to light pink, flat patches occurring discreetly and confluently present an easily recognized picture, and the diagnosis is quickly confirmed by both Wood light and potassium hydroxide preparation examinations. The typical locations are the upper parts of the chest and back, the neck, and the arms. Very extensive cases have been frequently seen and reported. In a few rare instances, however, the eruption has been confined to highly atypical areas, such as one palm, the soles, the face, and the scalp (Diseases of the Skin, St. Louis, CV Mosby Co, 1939, pp 1102-1106).We have recently seen two patients who have had highly unusual cases of tinea versicolor in that the eruption was limited solely to the groin and axillae or the perineum alone. The
Rudolph RI, Holzwanger JM. Inverse Tinea Versicolor. Arch Dermatol. 1975;111(9):1213. doi:10.1001/archderm.1975.01630210129020