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Dermoscopy of Pitted Keratolysis
Lauren L Lockwood1, Samuel Gehrke, Alexander A Navarini
1Department of Dermatology, University Hospital of Zurich, Zurich, Switzerland.
Abstract:
Irritated hyperhidrotic soles with multiple small pits are pathognomonic for pitted keratolysis (PK). Here we show the dermatoscopic view of typical pits that can ensure the diagnosis. PK is a plantar infection caused by Gram-positive bacteria, particularly Corynebacterium. Increases in skin surface pH, hyperhidrosis, and prolonged occlusion allow these bacteria to proliferate. The diagnosis is fundamentally clinical and treatment generally consists of a combination of hygienic measures, correcting plantar hyperhidrosis and topical antimicrobials.
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