The stool bleeds bright red but painless

Hemorrhoids Hemorrhoids is a common anorectal disease, internal hemorrhoids usually do not cause pain, but may appear bright red blood in the stool. Hemorrhoids bleeding is generally after defecation, dripping or spraying blood, blood attached to the surface of the stool. 2. Anal fissure Anal fissure is caused by anal skin tear, usually accompanied by pain, but in some cases, anal fissure may only bleed without pain. 3. Inflammatory bowel disease such as ulcerative colitis or Crohn's disease, may appear stool bleeding, but not necessarily accompanied by pain. This bleeding may be bright red or dark red, and may be accompanied by diarrhea, abdominal pain, mucus purulent blood stools and other symptoms. 4. Rectal polyps or tumors Rectal polyps or tumors may also cause bleeding in the stool, but usually do not cause pain. In this case, the blood may be bright red or dark red, and may be accompanied by changes in stool habits, mucus stool and other symptoms. It is important to note that stool bleeding bright red but painless should not be taken lightly, because it may be an early symptom of some serious diseases. If this occurs, it is recommended to seek medical attention in time for detailed examination and diagnosis, such as anal digital examination, colonoscopy, etc., to determine the cause of bleeding and take appropriate treatment measures.