Palmoplantar Keratoderma I, Striate, Focal, or Diffuse, also known as keratosis palmoplantaris striata i, is related to keratosis palmoplantaris striata iii and keratosis palmoplantaris striata ii. An important gene associated with Palmoplantar Keratoderma I, Striate, Focal, or Diffuse is DSG1 (Desmoglein 1). Affiliated tissues include skin, and related phenotypes are hyperhidrosis and palmoplantar keratoderma