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  • Understanding rectal bleeding: Causes and when to seek help

Understanding rectal bleeding: Causes and when to seek help

Mr Vamsi Velchuru
Written in association with: Mr Vamsi Velchuru Consultant General, Laparoscopic, and Colorectal Surgeon in Norwich
5.0 |

7 reviews

Sources: Top Doctors GB
Published: 25/03/2025 Edited by: Conor Lynch on 01/04/2025

Rectal bleeding is a symptom that can cause significant concern for individuals experiencing it. It refers to the passage of blood from the rectum, which can manifest as bright red blood on toilet paper, in the toilet bowl, or mixed with stool.

While it can be alarming, not all cases of rectal bleeding indicate a serious medical condition. One of the most common causes of rectal bleeding is haemorrhoids, which are swollen veins in the lower rectum or anus. Haemorrhoids can result from straining during bowel movements, prolonged sitting, or increased pressure during pregnancy.

 

Another frequent cause is anal fissures, small tears in the lining of the anus that can occur due to passing hard stools. In some cases, rectal bleeding may signal more serious conditions such as diverticulosis, inflammatory bowel disease (IBD), or colorectal cancer.

 

Diverticulosis involves the formation of pouches in the colon wall that can bleed if inflamed. IBD encompasses conditions like Crohn's disease and ulcerative colitis, which cause chronic inflammation of the gastrointestinal tract. Colorectal cancer is a more severe concern and often presents with additional symptoms such as changes in bowel habits, unexplained weight loss, or abdominal pain.

 

It’s essential to pay attention to accompanying symptoms and seek medical advice if you experience rectal bleeding, especially if it persists or is accompanied by severe pain, dizziness, or changes in bowel habits. A healthcare professional will typically conduct a thorough evaluation, which may include a physical examination and diagnostic tests like colonoscopy.

 

In conclusion, while rectal bleeding can stem from benign causes like haemorrhoids or fissures, it’s crucial to take this symptom seriously and consult a healthcare provider for proper diagnosis and treatment. Early intervention can lead to better outcomes and peace of mind.

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