Women of childbearing age will repeatedly experience a series of mental, behavioral and physical symptoms 7 to 14 days before the menstrual period (i.e., during the luteal phase of the menstrual cycle), and the symptoms disappear quickly after the menstrual period. Because the mental and emotional disorders of this disease are more prominent, it was previously named "premenstrual tension disorder" and "premenstrual tension syndrome". According to statistics from foreign experts, about 85% of women are affected by premenstrual symptoms, of which 5% to 10% have more severe symptoms. The symptoms of premenstrual syndrome are mainly divided into physical symptoms, mental symptoms and behavioral changes. In recent years, it is believed that the symptoms of this disease are widespread, involving several unrelated organs and systems in addition to psychoneurological symptoms, including a variety of organic and functional symptoms, so it is collectively called "premenstrual syndrome (PMS). However, some scholars still highlight the symptoms related to emotional abnormalities and propose the name "late luteal phase dysphoric disorder (LLPDD)" as a branch of PMS.