Running-related toenail abnormality.
A 33-year-old man presented with a keratotic plaque on his distal second toe. The plaque had been present for several months, and he also reported nail discoloration. The patient had no other related complaints. There was no family history of a similar eruption.
Adams
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Department of Dermatology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267-0592, USA.