![]() ![]() This allows your doctor to view the inside of the entire colon and look for any abnormalities, notes the Mayo Clinic. Colonoscopy, in which a long, flexible tube with a tiny camera on its tip is inserted into the rectum.Tests that may help determine the cause of rectal bleeding include: Your doctor will also perform a medical exam and take your medical history. These can include when the rectal bleeding began, any foods you ate prior to the onset of symptoms, if you were constipated, and if you were straining during your bowel movement. When you see a doctor for rectal bleeding, you’ll be asked a series of questions to help identify the cause. Less common causes of rectal bleeding include intestinal polyps, proctitis, colon cancer, inflammatory diseases of the bowel, or rapid bleeding from the stomach or upper GI tract. With infectious colitis, the swelling of the colon is caused by bacteria, viruses, or parasites. Ischemic colitis occurs when blood flow to the colon is reduced, typically as a result of narrowed or blocked arteries. This inflammation can lead to rectal bleeding. In certain cases, treatment may be needed.Īnal fissures, another cause of rectal bleeding, are tiny tears in the anus and anal canal commonly caused by straining with hard stools.Ĭolitis is the inflammation of the lining of the tissues of the colon. Hemorrhoids can be itchy, painful, and annoying, but they are rarely serious and often go away on their own. People who have persistent hemorrhoids are often constipated, are overweight or obese, or eat a very low-fiber diet. They may be caused by excessive straining, such as while making a bowel movement, sitting on the toilet too long, or in women, pregnancy and giving birth. Often called piles, hemorrhoids are swollen veins that appear at the bottom of the large intestine and outside the anus. Diverticula are common and typically do not cause problems, but they can sometimes protrude through the walls of the bowels, leading to bleeding or infections. It is the presence of tiny bulges, called diverticula, in the colon wall. The most common causes of rectal bleeding are diverticulosis, hemorrhoids, anal fissures, and colitis, according to the Cleveland Clinic.ĭiverticulosis is the most frequent cause of rectal bleeding. ![]()
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