Is rectal bleeding caused by internal hemorrhoids or external hemorrhoids?

Rectal bleeding is usually more closely associated with internal hemorrhoids, but it may also be a sign of other anorectal conditions. Bleeding during bowel movements is more commonly caused by internal hemorrhoids, which are located above the dentate line of the anal canal and result from the dilation of vascular tissue beneath the mucosa at the distal rectum. Bleeding from internal hemorrhoids typically appears as blood on the surface of stool or dripping after defecation, and is usually painless. Although external hemorrhoids can also cause bleeding, it is less common compared to internal hemorrhoids. External hemorrhoids are located below the dentate line and primarily arise from varicose veins in the skin surrounding the anus. Bleeding from external hemorrhoids is often accompanied by symptoms such as anal pain and itching. However, rectal bleeding is not solely related to hemorrhoids; it may also be associated with other anorectal disorders, such as anal fissures or colorectal tumors. If rectal bleeding occurs, it is recommended to seek medical attention promptly for proper diagnosis through professional evaluation and appropriate treatment.