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Hemorrhoids are the most common cause of rectal and anal complaints. The most common complaint symptoms are:
swelling and feeling a lump at the anus are all associated with an inflamed hemorrhoid.
It is important to remember that rectal bleeding or blood in the stool is never normal and while it may come from a relatively benign cause like hemorrhoids, more serious causes can be life threatening. These include bleeding from ulcers, diverticulitis, inflammatory bowel disease, and tumors. If rectal bleeding occurs, it is important to contact your health care professional or seek emergency medical care. This is especially important if the person is taking blood thinning medications.
When an internal hemorrhoid becomes inflamed, it can cause swelling. This in itself does not cause pain because there are no pain fibers attached to the veins above the pectinate line. Passing a hard stool can scrape off the thinned lining of the hemorrhoid causing painless bleeding. However, the swollen hemorrhoid can also cause spasm of the muscles that surround the rectum and anus causing pain, especially if they protrude or prolapse through the anus. A lump can be felt at the anal verge. Internal hemorrhoids can also thrombose (clot) leading to severe pain.