PROBLEM TO BE SOLVED: To provide a therapeutic agent for atopic dermatitis which has a high therapeutic effect and is replaceable with steroid medicines in the treatment of atopic dermatitis.SOLUTION: The therapeutic agent for atopic dermatitis includes a cyclic phosphatidic acid or its salt as an active ingredient.COPYRIGHT: (C)2012,JPO&INPIT【課題】アトピー性皮膚炎の治療においてステロイド剤に代替できる、治療効果の高いアトピー性皮膚炎治療剤を提供すること。【解決手段】環状ホスファチジン酸又はその塩を有効成分とするアトピー性皮膚炎治療剤。【選択図】なし