Any factor that impairs or obstructs the flow of pelvic veins out of the pelvis can result in pelvic venous stasis. Compared to men, the gynecological pelvic circulation is very different in terms of anatomy, circulation kinetics and mechanics, which is the basis for easy formation of pelvic stasis, thus causing stasis dysmenorrhea. So how to diagnose stasis dysmenorrhea? 1.Chronic pelvic cramping or cramping pain Gradually aggravated since the middle of menstruation, aggravated by menstrual flow or after exertion, with deep pain of intercourse and low back pain, sometimes unbearable and cyclical. 2.Sense of extreme fatigue May not be found by the doctor’s examination of the lesion concerned. 3.Stasis dysmenorrhea More than half of them have this symptom, and it is heaviest on the day before or the first day of menstruation, and it is obviously reduced or even disappeared after the increase of menstrual blood on the second day. 4. Excessive leucorrhea Mostly clear mucus or watery leucorrhea. 5.Menstrual changes The menstrual cycle is obviously changed, but there may be an increase in the amount of menstruation, and the menstrual blood is sauce-colored. 1/4 patients have a small amount of bleeding during ovulation. 6.Breast swelling and pain appears before menstruation, and the pain decreases rapidly after menstruation or disappears completely. 7.Vulvar swelling and pain The vaginal wall may be purple-blue, the labia are swollen and the veins are full. 8.Urinary tract symptoms About 1/3 of patients have obvious symptoms of frequent and painful urination before menstruation, and thus are suspected of having urinary tract infection. 9.Anal swelling is obvious before defecation and menstruation, especially when the uterus is extremely posterior. 10.Symptoms of autonomic dysfunction: neurasthenia, irritability and agitation, insomnia, headache, feeling of stuffiness in the precordial region or palpitations, generalized pain and discomfort. 11.Abdominal examination Mild deep pressure pain in the lower abdomen. 12.Gynecological examination The vulvar veins are full, the vaginal and cervical mucosa is often purple-blue, the uterus is mostly posterior and soft, there is obvious pressure pain and fullness in the parametrial adnexal area, but there is no obvious thickening or mass.