What causes abdominal pain before defecation

If the abdominal pain before defecation, the common cause may be the existence of intestinal obstruction, if the patient gastrointestinal motility is poor, fecal obstruction is easy to cause intestinal obstruction, if the patient has previous abdominal surgery, postoperative adhesion and pressure are also easy to cause intestinal obstruction, defecation will cause pain, sometimes abdominal distension. If the stool is smoothly discharged, the symptoms gradually ease. If the patient has ulcerative colitis, fecal irritation during forced defecation will also cause abdominal pain. If the patient has a malignant tumor of the intestine, as the tumor increases in size, it sometimes blocks the intestinal lumen and causes intestinal obstruction. Fecal stimulation of the cancer before defecation can also cause pain.