The symptoms of diarrhea during menstruation are usually a common physiological manifestation of menstruation, which may be related to the release of prostaglandins in the body, or may be caused by inattention to diet, improper abdominal warmth, organic lesions, etc., which need to be dealt with separately. 1, the release of prostaglandins in the body: When menstruation occurs, as the endometrium is shed from the uterine cavity, it releases endogenous prostaglandins, whose role is to promote uterine contraction and help The endometrium shed in the uterine cavity as well as the bleeding in the uterine cavity out of the body, so this time often the uterus is in a state of contraction, and the uterus is closely connected to the rectum, which can stimulate the adjacent rectum, causing an acceleration of intestinal peristalsis, which can lead to diarrhea; 2, do not pay attention to diet: If you do not pay attention to diet during menstruation, eating cold, stimulating or corrupt, spoiled food will affect the gastrointestinal function, which may also lead to diarrhea; 3. Improper abdominal warming: weakness during menstruation can lead to weakened gastrointestinal digestive function, indigestion, etc. Also, during menstruation, because the body loses more blood, if you do not pay attention to keep the abdomen warm so that the cold, cold, etc., it is also easy to cause gastrointestinal smooth muscle spasm, dysmenorrhea, diarrhea and other symptoms; 4, organic lesions: menstrual diarrhea may also be suffering from endometriosis, patients can appear during menstruation abdominal pain, diarrhea or constipation, and even have periodic small amounts of blood in the stool. In addition, some people have a posterior uterus, the uterus presses on the rectum, and each menstrual period will stimulate the intestines, with symptoms of excessive stools or diarrhea.