Pseudoxanthomatous Diffuse Cutaneous Mastocytosis, also known as infiltrative small vesicular diffuse cutaneous mastocytosis, is related to mastocytosis, cutaneous. An important gene associated with Pseudoxanthomatous Diffuse Cutaneous Mastocytosis is KIT (KIT Proto-Oncogene, Receptor Tyrosine Kinase). Affiliated tissues include skin, and related phenotypes are abnormal blistering of the skin and cutaneous mastocytosis