What causes occasional bleeding?

The most common cause of stool bleeding is hemorrhoids. In addition, it may also be caused by intestinal diseases. But when it is found that stool is bloody, the patient should first be given a basic physical examination. The most direct and simple method is anal finger examination, which clearly shows whether there is a mass in the range touched by the finger. Secondly, it is given anal enteroscopy to check whether there are obvious tortuous blood vessels inside and outside the anus. If all are excluded, it is recommended to perform enteroscopy to understand whether there are polyps, tumors, ulcerative colitis, Crohn's disease, gastrointestinal stromal tumors and other manifestations in the rectum and colon. If abnormal lesions are found, biopsy is given to clarify the pathological nature.