The term “aunt” generally refers to a woman’s menstrual period. Prolonged menstruation can be caused by diseases such as uterine fibroids, endometriosis, abnormal ovulation or abnormal blood clotting. 1. Uterine fibroids: This is a common disease that causes abnormal contraction of the uterus, resulting in prolonged menstruation. 2. Endometriosis: It also affects the contraction of the uterine muscle layer and increases the uterine lining, causing the patient’s menstrual period to be prolonged and the bleeding to become heavier. 3. Abnormal ovulation: abnormal ovulation function of women, such as polycystic ovary syndrome, can easily cause irregular shedding of the endometrium with bleeding. 4. Coagulation abnormality: In the case of women suffering from blood diseases, thrombocytopenia may occur, which may easily prolong the menstrual period and increase the amount of menstruation. If a woman has prolonged menstrual period, it is recommended to consult a doctor in time, improve the relevant examination and actively deal with it under the guidance of a specialist.