The anus is the opening at the end of your anal canal. The rectum sits between your colon and anus and acts as a holding chamber for stool. When pressure in your rectum becomes too great, the internal ring of muscle called the anal sphincter relaxes to allow stool to pass through your anal canal, the anus, and out of your body. The anus consists of glands, ducts, blood vessels, mucus, tissues, and nerve endings that can be highly sensitive to pain, irritation, and other sensations. Depending on the cause, a swollen anus can feel warm, cause sharp or burning pain especially after a bowel movement , and even produce bleeding and pus.
Signs and Symptoms of Anal Cancer
Signs and Symptoms of Anal Cancer | Anal Cancer Signs
Although rectal bleeding is common, only about one-third of those affected seek treatment. Symptoms usually develop quickly, and most causes are treatable and not serious. In some cases, rectal bleeding can be a symptom of a serious disease, such as colorectal cancer. Therefore, all rectal bleeding should be reported to the primary care physician. He or she can do a rectal examination or order tests like a colonoscopy to determine the cause of the bleeding. Rectal bleeding can be caused by:.
Back to Health A to Z. Anal pain pain in the bottom can be distressing, but is often just the result of a minor, treatable condition. Anal fissures can be very painful, but many heal on their own in a few weeks.