Lack of menstruation is mainly seen in the following conditions:
(1) Pregnancy, which can lead to menopause;
(2) Uterine amenorrhea, the specific causes of which are subdivided into congenital absence of uterus and endometritis;
(3) Ovarian amenorrhea, the specific etiology of which is subdivided into congenital ovarian hypoplasia or deficiency, removal or destruction of the ovaries, and functional ovarian tumors;
(4) Pituitary amenorrhea, which is specifically subdivided into pituitary tumors and hypogonadotropic amenorrhea.
Simply clamping the legs belongs to the normal behavior when there is no sex life, simply clamping the legs does not lead to menstruation, but need to pay attention to personal hygiene. If menstruation does not occur, it is recommended to consult a doctor and follow the doctor’s instructions to complete the examination for further diagnosis and treatment.