1. Caused by neuroendocrine dysfunction

2. Many systemic diseases, such as hematological diseases, hypertension, liver diseases, endocrine diseases, abortion, ectopic pregnancy, hydatidiform mole, reproductive tract infection, tumors (such as ovarian tumors and uterine fibroids), can cause menstrual disorders.

In addition, mental stress, environmental changes, malnutrition and other issues can also cause irregular menstruation. Generally, the menstrual cycle is not allowed, advanced, backward and irregular, with too much or too little menstrual flow, purple-black or reddish color, and thick or thin menstrual blood. , collectively known as irregular menstruation.

Women's health is the most important, and contraception should be done well in love.