Bright Red Blood in Stool: When to Seek Medical Attention - Surgery

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Rectal bleeding


I have been experiencing bright red blood dripping after bowel movements for the past week.
The stool and blood are separate, and there is no pain.
Previously, my bowel movements were normal, occurring once a day.
I have had internal hemorrhoids for several years, which would protrude after a bowel movement but could be pushed back in afterward.
However, I have only recently started to notice bleeding.
What could be the cause of this? Should I see a doctor urgently?

La Wan Tou Yun, 20~29 year old female. Ask Date: 2017/03/26

Dr. Xu Kaixi reply Surgery


Hello: Blood in the stool is considered an abnormal symptom and can range from common conditions like hemorrhoids to more serious gastrointestinal diseases.
Based on your description, the likelihood of hemorrhoidal bleeding is the highest.
The causes of bleeding are related to various factors, including diet and lifestyle habits.
It is recommended that you visit a hospital for further examination.
You may start by seeing a surgeon or a gastroenterologist for a preliminary basic check-up, which may include a fecal occult blood test or even a colonoscopy.

Reply Date: 2017/03/26

More Info


When it comes to bright red blood in the stool, it is essential to approach the situation with caution and awareness of potential underlying health issues. The presence of bright red blood, especially if it is separate from the stool and occurs consistently, can indicate several conditions, some of which may require medical attention.

In your case, you mentioned that you have a history of internal hemorrhoids (also known as piles), which can often cause bright red bleeding during bowel movements. Hemorrhoids are swollen veins in the lower rectum and anus that can become irritated and bleed, especially during straining or passing hard stools. Since you have noted that the blood is bright red and separate from the stool, this is consistent with hemorrhoidal bleeding. However, the fact that this has recently changed and you are experiencing bleeding after years of no issues is a reason to be vigilant.

While hemorrhoids are a common cause of rectal bleeding, there are other potential causes that should not be overlooked. These include:
1. Anal fissures: Small tears in the lining of the anus can occur during bowel movements, especially if the stool is hard or large. This can lead to bright red blood and is often accompanied by pain during bowel movements.

2. Diverticular disease: Diverticulosis, which involves the formation of small pouches in the colon wall, can lead to diverticulitis, where these pouches become inflamed or infected. This condition can also cause bleeding.

3. Colorectal polyps or cancer: While less common, polyps (growths on the colon lining) can bleed, and in some cases, they can be precursors to colorectal cancer. Any new onset of rectal bleeding, especially in individuals over the age of 50 or with a family history of colorectal cancer, should be evaluated.

4. Gastrointestinal conditions: Other conditions affecting the gastrointestinal tract, such as inflammatory bowel disease (IBD) or infections, can also lead to rectal bleeding.

Given your symptoms, it is advisable to seek medical attention promptly. A healthcare professional will likely perform a physical examination and may recommend further diagnostic tests, such as a colonoscopy, to visualize the colon and rectum. This is particularly important if the bleeding persists, increases in volume, or is accompanied by other symptoms such as changes in bowel habits, abdominal pain, or weight loss.

In summary, while your history of internal hemorrhoids may explain the bright red blood, the recent change in your symptoms warrants a thorough evaluation. It is always better to err on the side of caution when it comes to rectal bleeding, as early diagnosis and treatment can prevent potential complications and address any serious underlying conditions. Please consider scheduling an appointment with a healthcare provider as soon as possible to discuss your symptoms and receive appropriate care.

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