若年女性の右手首，右肘窩，右肩甲骨部に生じた硬化性萎縮性苔癬

・Blaschko線に沿って線状・列序性に配列する下肢の硬化性萎縮性苔癬（lichen sclerosus et atrophicus：LSA）の小児例を経験した．

・若年女性に発症した硬化性萎縮性苔癬（lichen sclerosus et atrophicus：LSA）を経験した．

・LSAは中高年女性の外陰部に好発するが，自験例ではとくに既往のない若年女性の陰部外にのみ症状を認めた．

・ステロイド，タクロリムス外用薬塗布にて治療を開始し，皮疹の拡大や新規出現は認めていない．

（「症例のポイント」より）

　

A case of a young woman with lichen sclerosus et atrophicus on the right wrist, the elbow and the shoulder

　

Ishidaka, Eriko1）Ehara, Yoshie1）Shinohara, Megumi2）Nishimoto, Shuhei1） 1）Division of Dermatology, Saiseikai Yokohamashi Tobu Hospital 2）Ozeki Clinic

　

A previously healthy 20-year-old female developed white papules on her upper arm, elbow and back 5 years prior to her first visit. As a result of skin biopsy, we diagnosed lichen sclerosus et atrophicus（LSA）. LSA usually appears genital lesions of postmenopausal women. The cause is unknown , it is thought that LSA is associated with autoimmune disease and sex hormones. In this case, she has no risk of LSA and the papules were all located extra genital area.