Abstract
Pitted keratolysis is a multifocal superficial erosion of the stratum corneum, usually limited to the soles of the feet. A causative agent has been described previously, but its identity is unclear. While studying a lesion of pitted keratolysis, we found an actinomycete with the morphologic appearance ofDermatophilus congolensis, the cause of dermatophilosis in animals. From our study of this case and from a review of the literature we believe thatD congolensiswas a causal factor in this lesion and that it was probably the causative agent of some cases of pitted keratolysis described previously.

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