John Libbey Eurotext




Superimposed segmental dermatitis with chronic prurigo
European Journal of Dermatology. Volume 19, Number 4, 337-40, July-August 2009, Genes and Skin
Free Article
Author(s) : Yasuhiro Kawachi, Shijima Taguchi, Yasuhiro Fujisawa, Junichi Furuta, Yasuhiro Nakamura, Yoshiyuki Ishii, Fujio Otsuka
Summary : Common acquired skin diseases with a polygenic background, such as lichen planus, may show linear or segmental manifestations of underlying systemic skin disease. The linear arrangement in such cases is usually consistent with the lines of Blaschko. Happle summarized the various types of segmental arrangement of common polygenic diseases and proposed a novel designation of superimposed segmental dermatosis. Here, we report a unilateral linear dermatitis distributed along the lines of Blaschko on the leg, which was not self-healing and persisted for at least 6 years without complete remission, and was accompanied by preceding chronic prurigo on the extremities. Histological examination showed subacute spongiotic dermatitis and epidermal infiltration of CD4-positive cells. This case report presents a superimposed segmental dermatitis that arose based on systemic eczematous conditions, such as chronic prurigo.
Keywords : Blaschko lines, superimposed segmental dermatitis

Superimposed segmental dermatitis with chronic prurigo