noun
menstrual pain; period pain
Common medical and everyday term for cramps or pain during menstruation.
生理痛がひどいので、薬を飲んだ。
I took medicine because my menstrual pain was severe.
More formal medical term for menstrual pain; 生理痛 is more common in everyday conversation.
Compound of 生理 (menstruation) and 痛 (pain).