_:vb50945334 . _:vb50945334 . _:vb50945334 "A nonepidermolytic palmoplantar keratoderma characterized by localized areas of hyperkeratosis located mainly on pressure points and sites of recurrent friction."^^ . _:vb50945334 "url:https://en.wikipedia.org/wiki/Palmoplantar_keratoderma#Focal"^^ . _:vb50945334 . _:vb50945334 "url:https://www.ncbi.nlm.nih.gov/pubmed/21176769"^^ . _:vb50945334 . _:vb50945334 . _:vb50945334 .