 The most common cause of pitted keratolysis is "Corynebacterium" species.However, several other bacteria may also cause the condition, particularly "Actinomyces keratolytica", "Dermatophilus congolensis", "Kytococcus sedentarius", and "Streptomyces".Less frequently, it is due to "Acinetobacter", "Clostridium", "Klebsiella", and "Pseudomonas" species.