noun
dysmenorrhea; painful menstruation
Medical term for menstrual pain severe enough to interfere with daily activities. Used in clinical contexts.
月経困難症の治療には鎮痛剤が処方されることがあります。
Painkillers may be prescribed for the treatment of dysmenorrhea.
彼女は月経困難症で毎月学校を休んでいた。
She missed school every month due to painful periods.
生理痛 is the common, everyday term for menstrual cramps or period pain, while 月経困難症 is the formal medical diagnosis.
Compound of 月経 (menstruation) + 困難 (difficulty, hardship) + 症 (condition, disease). A modern medical term.