Probably the most common cause of rectal bleeding is
hemorrhoids, also known as piles. Hemorrhoids are enlarged blood vessels in the anal canal that rupture and produce bright red blood. These swollen veins can be located inside the anal canal (internal hemorrhoids) or on the outside (external hemorrhoids). While external hemorrhoids can cause pain, throbbing or burning, internal hemorrhoids are usually painless. Besides rectal bleeding, other common symptoms of hemorrhoids are pain, itching, lumps around the anus, painful bowel movement and leakage of feces.
Mild cases of hemorrhoids can be treated at home with over-the-counter medication. Topical gels, creams, cold compresses, sitz baths, oral pain relievers, and keeping the area clean and dry are all recommended methods to reduce the symptoms of hemorrhoids. Wearing cotton clothing and avoiding constricting garments also can help bring relief.
For chronic hemorrhoids, removal by banding, injections or infrared coagulation may be the best options for relief. You can also opt to have your hemorrhoids removed surgically.