サッカーによる日光曝露が誘因と思われた小児SLE

・日光曝露によって発症した小児全身性エリテマトーデス（SLE）の典型例を経験した．

・日光曝露はSLE発症の重要なメカニズムである．

・小児期発症のSLEは成人発症に比べて急性かつ重篤な経過をたどるため，注意が必要である．

（「症例のポイント」より）

　

Pediatric systemic lupus erythematosus triggered by frequent sun exposure

　

Usui, Toshihiro1）Arai, Satoru1）Yamaguchi, Kenichi2） 1）Department of Dermatology, t. Luke’s International Hospital 2）Immuno-Rheumatology Center, St. Luke’s International Hospital

　

Ultraviolet radiation is thought to precipitate the onset of systemic lupus erythematosus (SLE). We report a case of an 11-year-old boy who presented with a 1-month history of a butterfly rash and discoid lupus erythematosus on his bilateral ears with no systemic symptoms. A diagnosis of SLE was confirmed by blood examination and histopathological findings. Since he was a member of a football team and played football for 3-4 hours twice a week, we suspect that excessive sun exposure was a trigger of SLE in this case.