As for topic of this invention, as the side effect to the skin of the non steroid type antiphlogistic pain reliever is controlled, by containing the dibenzoylmethane derivative as the UVA absorbent time-dependant denaturation of the non steroid type antiphlogistic pain reliever, while preventing the crystal precipitation of the dibenzoylmethane derivative and by containing the oily component skin irritation by the emulsifier and the consistency medicine, the oil phase component, there is no, the non steroid type antiphlogistic pain reliever originally times when the antiphlogistic anesthetic medicine for external application which the effect which it possesses sufficiently is shown is offered there are. The aforementioned topic, contains the external use base and the non steroid type antiphlogistic pain reliever and the dibenzoylmethane derivative which contain the oil phase component, is solved by making the antiphlogistic anesthetic external use medicine where the gross of the fatty acid ester in the oil phase component is combined the aforementioned dibenzoylmethane derivative 3 time quantity at least.本発明の課題は、非ステロイド系消炎鎮痛剤の皮膚への副作用を抑制するとともに、UVA吸収剤としてジベンゾイルメタン誘導体を含有することにより非ステロイド系消炎鎮痛剤の経時的変性を、そして油性成分を含有することによりジベンゾイルメタン誘導体の結晶析出を防止しつつ、油相成分、乳化剤および粘稠剤による皮膚刺激性がなく、非ステロイド系消炎鎮痛剤の本来有する効果が十分に発揮される消炎鎮痛外用薬を提供することにある。前記課題は、油相成分を含有する外用基剤と、非ステロイド系消炎鎮痛剤およびジベンゾイルメタン誘導体を含有し、油相成分中の脂肪酸エステルの総量が前記ジベンゾイルメタン誘導体の少なくとも3倍量配合されている消炎鎮痛外用剤とすることにより、解決される。
