The present invention relates to thermogelling Pharmaceutical compositions adapted for topical administration also include a base form a local anesthetic. Furthermore, the composition comprises one or more surfactants to impart thermal gelation properties and polyoxyethylene castor oil. [Selection] Figure Figure 1本発明は局所麻酔薬を塩基形態で含み、また局所投与に適した熱ゲル化医薬組成物に関する。この組成物は更に、ポリオキシエチレンヒマシ油及び熱ゲル化特性を付与するための1種以上の界面活性剤を含む。【選択図】図1