The present invention pertains to a medicine that is for the treatment of eye and skin symptoms associated with allergic diseases and that is characterized by comprising a compound represented by formula (I) or a pharmaceutically acceptable salt thereof. The medicine has the effect of strongly alleviating eye symptoms (such as itchy or watery eyes) and/or skin symptoms (such as itchy skin) that are associated with allergic diseases, so the medicine is useful as a treatment for eye and skin symptoms associated with allergic diseases.本發明係關於一種伴隨過敏性疾病之眼症狀或皮膚症狀之治療用醫藥,其特徵在於含有式(I)所表示之化合物或其醫藥上容許之鹽。本發明之醫藥由於具有更強力地緩解伴隨過敏性疾病之眼症狀(眼睛之搔癢、流淚等)及/或皮膚症狀(皮膚之搔癢等)之效果,故而作為伴隨過敏性疾病之眼症狀或皮膚症狀之治療用醫藥有用。
