< Topic >The menstruation difficult symptom and/or prevention of the attendance condition which accompanies that and/or offer the remedy.SolutionsThis invention the menstruation difficult symptom which designates toranirasuto as the active ingredient and/or prevention of the attendance condition which accompanies that and/or offers the remedy.【課題】月経困難症及び/又はそれに伴う随伴症状の予防及び/又は治療薬を提供すること。【解決手段】本発明は、トラニラストを有効成分とする月経困難症及び/又はそれに伴う随伴症状の予防及び/又は治療薬を提供する。