A 46 year old woman’s menstruation appears to be dribbling up to 20 days may be due to menopause, uterine fibroids, endometrial polyps and other factors. 1. Menopause: Menopause is the physiological stage after natural menopause, which is the normal transition from reproductive period to old age. Women may have menstrual disorders, such as long duration of menstruation, irregular cycles, etc., which may be manifested as dribbling menstruation. 2. Uterine fibroids: the symptoms of uterine fibroids include prolonged menstrual period, irregular vaginal bleeding, and some patients may have irregular menstrual flow for up to 20 days. 3. Endometrial polyps: patients with endometrial polyps may have prolonged menstrual periods, excessive menstruation and other symptoms, manifested as menstrual dribbling up to 20 days. There are many reasons why a 46 year old woman’s menstrual period may be irregular for up to 20 days, so we suggest that the patient go to the hospital and get a clear picture of the cause of the problem.