PROBLEM TO BE SOLVED: To provide an external preparation for suppressing formation of keloids and/or formation of hypertrophic scars.SOLUTION: This external preparation having suppressing actions on the formation of the keloids and/or the hypertrophic scars and analgesic and antipruritic actions in combination comprises acetylsalicylic acid or its salt as an active ingredient.COPYRIGHT: (C)2004,JPO【課題】ケロイド形成および/または肥厚性瘢痕形成抑制外用剤の提供。【解決手段】アセチルサリチル酸またはその塩を有効成分とするケロイドおよび/または肥厚性瘢痕の形成抑制作用と鎮痛および鎮痒作用を併せ持つ外用剤。【選択図】なし