Bleeding Per Rectum...

Causes and Risk Factors of Rectal Bleeding

The most common causes of rectal bleeding are diverticulosis, hemorrhoids, anal fissures, and colitis, according to the Cleveland Clinic.right up arrow
Diverticulosis is the most common cause of rectal bleeding. It is the presence of tiny bulges, called diverticula, in the colon wall. Diverticula are common and typically do not cause problems, but can sometimes protrude through the walls of the bowels, leading to bleeding or infections.
Often called piles, hemorrhoids are swollen veins that appear at the bottom of the large intestine and outside the anus. They are caused by excessive straining, such as while making a bowel movement, sitting on the toilet too long, or, in women, pregnancy and giving birth. People who have persistent hemorrhoids are often constipated, overweight or obese, or eating a very low-fiber diet.