Bright Red Blood During Bowel Movements: Causes Beyond Hemorrhoids - Gastroenterology and Hepatology

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Blood in the stool, but no pain?


A small lump has developed around the anus, and there is bleeding during bowel movements, but it is not painful.
The blood is bright red rather than dark red, and the stool is normal brown and not dry or hard.
I have purchased hemorrhoid cream to apply, but it hasn't been very effective.
Are there any other possible causes besides hemorrhoids?

R, 20~29 year old female. Ask Date: 2019/03/27

Dr. Chen Qifeng reply Gastroenterology and Hepatology


Please seek medical attention from a colorectal surgeon.

Reply Date: 2019/03/27

More Info


Bright red blood during bowel movements can indeed be alarming, and while hemorrhoids are a common cause, there are several other potential reasons for this symptom. It's important to understand the context and characteristics of the bleeding, as well as any accompanying symptoms, to better assess the situation.

1. Hemorrhoids: As you mentioned, hemorrhoids are swollen veins in the rectum or anus that can cause bright red blood during bowel movements. They can be internal or external and often result in bleeding, especially during straining or passing stool. However, if the topical treatments you've tried have not alleviated your symptoms, it may be worth exploring other causes.

2. Anal Fissures: These are small tears in the lining of the anus, often caused by passing hard stools. They can lead to bright red bleeding and may not always be accompanied by pain, especially if the fissure is not deep. The blood is typically seen on the toilet paper or on the stool itself.

3. Diverticular Disease: Diverticulosis involves the formation of small pouches in the colon wall, which can sometimes become inflamed or infected (diverticulitis). While this condition can lead to bleeding, it is often accompanied by other symptoms such as abdominal pain or changes in bowel habits.

4. Colorectal Polyps or Cancer: While less common, polyps (growths on the lining of the colon) or colorectal cancer can also cause bright red blood in the stool. This is particularly concerning if there are other symptoms such as weight loss, changes in bowel habits, or a family history of colorectal cancer.

5. Gastrointestinal Infections: Certain infections can lead to inflammation of the gastrointestinal tract, which may result in bleeding. This is usually accompanied by other symptoms such as diarrhea, abdominal cramps, or fever.

6. Angiodysplasia: This is a condition characterized by abnormal blood vessels in the gastrointestinal tract, which can lead to bleeding. It is more common in older adults and may not always present with other symptoms.

Given that your blood is bright red and your stool is normal in color and consistency, it suggests that the bleeding is likely originating from the lower gastrointestinal tract, such as the rectum or anus. Since you have already tried over-the-counter treatments for hemorrhoids without improvement, it is advisable to consult a healthcare professional for a thorough evaluation.

A doctor may recommend a physical examination, and possibly further diagnostic tests such as a colonoscopy, to identify the exact cause of the bleeding. This is particularly important if the bleeding persists, increases in frequency, or is accompanied by other concerning symptoms.

In summary, while hemorrhoids are a common cause of bright red blood during bowel movements, there are several other potential causes that should be considered. It is crucial to seek medical advice to ensure an accurate diagnosis and appropriate treatment. Early intervention can help prevent complications and address any underlying health issues effectively.

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