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Brown palm pseudochromhidrosis

A 63-year-old Japanese man presented with brown sweating from his palms for 2 days. He was a company president and denied touching any agent that might have caused the deposition of any pigments. He had no habitual or occupational opportunities to use any dyes, pigments or metals, except for having applied an ointment for tinea pedis the day before the onset. Examination showed brown pigmentation on the palms (Fig. 1). Wiping with an ethanolsoaked cotton swab could remove the colour from the palms. The soles of the feet were not involved. The colour disappeared within a week and no recurrence was observed over a 2month period.