Home > Medical > Digestive-Health > Anal and rectal disorders Anal and rectal disorders All sections in Digestive Health » About Gastro » Anal & Rectal Disorders » Digestive Disorders » Common Symptoms » Dehydration » Digestive Health » Gastro & Food Illness » IBS » News » Tests & Procedures Learn more about colorectal disorders including anal fissure, rectal prolapse and proctitis with symptoms, causes and treatment advice. Rectal prolapse Rectal prolapse is when all or part of the rectum protrudes outside the anus. Ulcerative colitis Ulcerative colitis is an inflammatory bowel disease. Your anus Often regarded as taboo, erotic, and many times, used as an offensive term, the primary purpose of the anus is for defecation, better known as pooing. Proctitis Proctitis is inflammation of the lining of the rectum, called the rectal mucosa load more From our sponsor Sponsored: Is your pancreas working properly? Sponsored: Are you having problems digesting your food?