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3대에 걸쳐서 나타난 유전적 (遺傳的) 대측성 (對側性) 색소이상증
전인기,김영표 대한피부과학회 1970 大韓皮膚科學會誌 Vol.8 No.1
Dyschromatosis Symmetrica Hereditaria (Toyama) is one of the pigment anormaly hereditary skin disease which is known to manifest the Japanese. Various authors such as Toyama, Matsumoto, Komaya-Dohi and Ichikawa-Hiraga have reported the disease under different diagnostic name. Clinical characteristics of the disease are shown to have multiple reticular dark brown spotty macular skin lesion mostly over the face, neck, back of hands, feet, fingers and toes, which are affecting symmetrically, without subjective symptom, and occasionally the pigmented and depigmented macular lesions are intermingled. Among these author's reports to the disease, one postulate those which Matsumoto and Komaya-Dohi's cases were essentially similar type in clinical manifestation and were described as showing spotty pigmented macules intermingling with the depigmented over the areas as those of Toyama's. In this article, a case of Dyschromatosis Symemtrica Hereditaria manifesting 21 years old Korean male, which is similar to Matsumoto's type, is presented. Search for the heredity back ground revealed that the grandfather and mother were affected by this disease, and authors assumed the types of heredity of the disease to be irregular non-sexlinked dominant inheritance. Authors presented also distinctions of the histopathological findings of the disease which are hyperkeratosis, increased melanin granules in stratum mucosum layer and imperfect or immatured granular cells, and discussions of differential diagnosis and review of literatures are made.