White fibrous papulosus of the neck

Introduction: Whıte fibrous papulosus of the neck (WFPON) is a newly defined clinical diagnosis by Shimizu in 1985. It consists of smooth, linear, 2-3 mm papules, independent of the hair follicles on the neck and back. White fibrous papulosus of the neck (WFPON) and pseudoxanthoma elastic-like dermal elastosis (PXE-PDE) are thought to be clinical variants of the same disease. For this reason, some authors have described WFPON, PXE-PDE and other noninflammatory middermal elastosis cases as "fibroelastolytic variants of primary skin aging." These clinical pictures are clinically similar to each other in many ways, but histologically they can be separated by intact elastic fibers and increased amounts of collagen in the midreticulary dermis.