Understanding rectal bleeding

Rectal bleeding refers to any blood that passes from the anus, often noticed during or after a bowel movement. It can range from mild, such as spotting on toilet paper, to more severe bleeding that appears in the toilet bowl or mixed with stool. While rectal bleeding is relatively common and not always serious, it should never be ignored.

One of the most common causes of rectal bleeding is haemorrhoids—swollen blood vessels in the rectum or anus, often caused by straining during bowel movements or prolonged sitting. Other benign causes include anal fissures (small tears in the anal lining), constipation, or hard stools. However, rectal bleeding can also indicate more serious conditions, such as inflammatory bowel disease (IBD), diverticulosis, colorectal polyps, or colorectal cancer.

The colour of the blood can offer clues about the source of the bleeding. Bright red blood typically indicates bleeding from the lower gastrointestinal tract, such as the rectum or anus. Darker or maroon-colored blood may suggest bleeding higher up in the colon or even in the small intestine.

Symptoms that may accompany rectal bleeding include abdominal pain, changes in bowel habits, weight loss, fatigue, or signs of anaemia (such as dizziness or weakness). Anyone experiencing significant or persistent bleeding, especially if it is accompanied by other symptoms, should seek medical evaluation.

Diagnosis often involves a physical exam, digital rectal exam, and possibly a colonoscopy to inspect the colon and rectum. Treatment depends on the underlying cause and can range from dietary changes and topical treatments to surgery or medication.

Early detection is key—while many causes are minor, rectal bleeding can be a warning sign of serious conditions. Prompt medical attention helps ensure appropriate care and peace of mind.