{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T00:54:19Z","timestamp":1790643259453,"version":"4.1.0"},"reference-count":34,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2016,1,27]],"date-time":"2016-01-27T00:00:00Z","timestamp":1453852800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Deutsche Derma Gesell"],"published-print":{"date-parts":[[2016,2]]},"abstract":"<jats:title>Summary<\/jats:title><jats:p>Palmoplantar keratodermas comprise a diverse group of acquired and hereditary disorders marked by excessive thickening of the epidermis of palms and soles. Early onset and positive family history suggest a genetic cause. While hereditary forms of palmoplantar keratoderma (PPK) may represent the sole or dominant clinical feature, they may also be associated with other ectodermal defects or extracutaneous manifestations. In recent years, much progress has been made in deciphering the genetic basis of PPK, which has led to the emergence of new disorders and syndromes. The elucidation of disease mechanisms has opened new avenues for specific therapies, increasingly sparking interest in this field. Given the high heterogeneity with respect to clinical features, genetic defects, and disease mechanisms, the classification of PPK is based on various criteria. These include extent of disease manifestations, morphology of palmoplantar skin involvement, inheritance patterns, and molecular pathogenesis. Though not always feasible, the clinical distinction of various PPK entities is based on fine\u2010tuned criteria or clues. Remarkably, apparently distinct disorders have been shown to be allelic, as they are caused by mutations in the same gene. By contrast, similar clinical pictures may result from mutations in different genes. Because of this complexity, mutation analysis is required to determine the precise type of PPK. The best\u2010defined entities are described in this review.<\/jats:p>","DOI":"10.1111\/ddg.12930","type":"journal-article","created":{"date-parts":[[2016,1,28]],"date-time":"2016-01-28T04:10:56Z","timestamp":1453954256000},"page":"123-140","source":"Crossref","is-referenced-by-count":18,"title":["Palmoplantar keratodermas: clinical and genetic aspects"],"prefix":"10.1111","volume":"14","author":[{"given":"Cristina","family":"Has","sequence":"first","affiliation":[{"name":"Department of Dermatology University of Freiburg Medical Center  Freiburg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kristin","family":"Technau\u2010Hafsi","sequence":"additional","affiliation":[{"name":"Department of Dermatology University of Freiburg Medical Center  Freiburg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2016,1,27]]},"reference":[{"issue":"9","key":"e_1_2_11_2_1","doi-asserted-by":"crossref","first-page":"781","DOI":"10.1111\/ddg.12418","article-title":"Palmoplantar keratoderma (PPK): acquired and genetic causes of a not so rare disease","volume":"12","author":"Schiller S","year":"2014","journal-title":"J Dtsch Dermatol Ges"},{"key":"e_1_2_11_3_1","volume-title":"Rooks Textbook of Dermatology","author":"Palmoplantar keratodermas","year":"2010"},{"issue":"2","key":"e_1_2_11_4_1","doi-asserted-by":"crossref","first-page":"120","DOI":"10.2340\/0001555572120122","article-title":"Indication for the identity of palmoplantar keratoderma type Unna\u2010Thost with type V\u00f6rner. 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