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Correspondence |

Epidermolytic Palmoplantar Keratoderma With Constriction Bands on Bilateral Fifth Toes

Naoko Funakushi, MD; Nobuyasu Mayuzumi, MD, PhD; Ryohei Sugimura, MD; Shigaku Ikeda, MD, PhD
Arch Dermatol. 2009;145(5):609-610. doi:10.1001/archdermatol.2009.83.
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Epidermolytic palmoplantar keratoderma (EPPK) is an autosomal dominant skin disorder characterized by hyperkeratosis limited to the palms and soles and can be categorized into 2 types: Vörner and Unna-Thost types. The clinical expressions of the 2 types of EPPK are similar, but the histologic characteristics are different. Vörner type EPPK is characterized by vacuolar degeneration of keratinocytes in the upper spinous to granular layers. Unna-Thost EPPK can be distinguished from Vörner type because the Unna-Thost type lacks vacuolar degeneration.

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Figure 1.

Figure 1. The palms (A) and soles (B and C) showed diffuse thick hyperkeratosis with erythematous border. The black spot on the thenar eminence of the palm is subcutaneous bleeding.

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Figure 2.

Figure 2. Pseudoainhumlike constriction bands on both fifth toes.

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