Dermoscopy confirms diagnosis of circumscribed plantar hypokeratosis

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Clinical presentation

A 80-year-old man presented with a nonhealing erythematous lesion with a peripheral keratotic scale located on his right sole (Fig 1). The lesion had appeared 2 years earlier, was asymptomatic, and slowly enlarged. The patient remembered a local burning trauma during infancy.

Dermoscopic appearance

Dermoscopy revealed a well-demarcated pink area with scattered reddish dots, often disposed in circles around white clods; step-like scales were also visible at the periphery of the lesion (Fig 2).

Histologic diagnosis

The histologic features are shown in Fig 3. Our diagnosis was circumscribed plantar hypokeratosis (CPH).

Key message

Circumscribed palmar/plantar hypokeratosis (CPH) is a rare skin disorder consisting of a solitary area of depressed skin occurring primarily in middle-aged women. Only 72 cases have been reported, typically on the palms,1 and dermoscopic features have never been described on soles.1, 2 In our case, we observed a distinctive pattern of red dots arranged in circles around white small

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Publication of this article was supported by 3Gen Inc.

Funding sources: None.

Conflicts of interest: None declared.

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