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Pitted keratolysis in Adult
Other Resources UpToDate PubMed

Pitted keratolysis in Adult

Contributors: Daniel Gutierrez MD, Noah Craft MD, PhD, Lindy P. Fox MD, Susan Burgin MD
Other Resources UpToDate PubMed


Pitted keratolysis (also known as keratoma plantare sulcatum and ringed keratolysis) is a noninflammatory bacterial infection of the plantar stratum corneum caused by any of the following bacteria: Kytococcus sedentarius (formerly Micrococcus sedentarius), Dermatophilus congolensis, or species of Corynebacterium or Actinomyces.

Affected areas are generally asymptomatic but can emit a foul odor due to the production of isovaleric acid by the bacterial metabolism of the leucine in sweat. Rarely, pruritus, pain, or burning may be present. Predisposing factors are excessive sweating and prolonged occlusion in a warm, humid environment. Although rare, the hands may be affected.


L08.89 – Other specified local infections of the skin and subcutaneous tissue

51212009 – Pitted keratolysis

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Last Reviewed:10/28/2019
Last Updated:11/05/2019
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Pitted keratolysis in Adult
A medical illustration showing key findings of Pitted keratolysis : Macerated skin, Pits, Hyperhidrosis, Plantar foot
Clinical image of Pitted keratolysis - imageId=230692. Click to open in gallery.  caption: 'Multiple tiny keratin pits on the heel.'
Multiple tiny keratin pits on the heel.
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