Rectal Bleeding: Clinical Meaning

Colitis (Ulcerative Colitis)

Ulcerative colitis is a chronic inflammatory bowel disease causing long-lasting inflammation and ulcers in the digestive tract, primarily affecting the colon and rectum. It leads to abdominal pain, diarrhea with blood, and urgency.

Colorectal Cancer

Colorectal cancer develops in the colon or rectum and is the third most common cancer globally. Risk factors include age over 50, family history, inflammatory bowel disease, and diet high in red/processed meat.

Hemorrhoids

Hemorrhoids are swollen veins in the rectum or anus causing rectal bleeding, itching, and discomfort. They are classified as internal (above the dentate line) or external; most respond to dietary changes and topical treatments.

Anal Fissure

An anal fissure is a small tear in the lining of the anal canal causing sharp pain and bleeding during bowel movements. Chronic fissures may require topical nitroglycerin, calcium channel blockers, or surgical treatment.

Colon Polyps

Colon polyps are growths on the inner lining of the colon that are usually asymptomatic but can develop into colorectal cancer over time. Colonoscopy is the gold standard for detection and polypectomy; surveillance intervals depend on polyp type and size.