Rectal Bleeding: Causes and When to Seek Medical Help - Surgery

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Blood in stool resembling water?


Hello, I usually have difficulty completely emptying my bowels, so I have developed a habit of wiping very thoroughly until I am sure it is clean.
As a result, I occasionally wipe to the point of bleeding, which I have become accustomed to.
Recently, when I sat on the toilet to have a bowel movement, I heard a sound of flowing water, and it turned out that I was bleeding profusely.
After that, I was afraid to wipe too deeply, and I found that rinsing with warm water after using the restroom helped improve the situation.
At that time, the bleeding was accompanied by blood clots and some membranes, and I am unsure why these membranes formed.
I would like to know how to seek medical advice.
Thank you.

Ruzuo Kunniao, 40~49 year old female. Ask Date: 2019/02/17

Dr. Xu Kaixi reply Surgery


The cause of bleeding you described may be due to a tear in the anal mucosa; the membrane could be a secretion from the intestinal mucosa.
If you are concerned, it is advisable to visit a hospital outpatient clinic for examination.

Reply Date: 2019/02/17

More Info


Rectal bleeding can be a concerning symptom, and it's important to understand its potential causes and when to seek medical help. Based on your description, it seems that you have experienced rectal bleeding, which can be caused by various factors, including hemorrhoids, anal fissures, or more serious conditions such as diverticular disease or colorectal cancer.

1. Common Causes of Rectal Bleeding:
- Hemorrhoids: Swollen blood vessels in the rectal area can cause bright red blood during bowel movements. They can be internal or external and may also cause discomfort or itching.

- Anal Fissures: Small tears in the lining of the anus, often due to passing hard stools, can lead to sharp pain and bleeding during bowel movements.

- Diverticular Disease: This condition involves the formation of small pouches in the colon wall, which can become inflamed or infected, leading to bleeding.

- Colorectal Polyps or Cancer: Abnormal growths in the colon can cause bleeding. While polyps are often benign, some can develop into cancer over time.

2. When to Seek Medical Help:
- Persistent Bleeding: If you experience ongoing or recurrent bleeding, it is essential to consult a healthcare provider.

- Large Amounts of Blood: If you notice a significant amount of blood, especially if it is dark or accompanied by clots, seek medical attention immediately.

- Accompanying Symptoms: If you experience additional symptoms such as severe abdominal pain, changes in bowel habits, weight loss, or fatigue, these could indicate a more serious condition that requires prompt evaluation.

- Age and Risk Factors: Individuals over 50 or those with a family history of colorectal cancer should be particularly vigilant about any rectal bleeding.

3. What to Expect During a Medical Evaluation:
- Medical History: Your doctor will ask about your symptoms, medical history, and any relevant lifestyle factors (such as diet and bowel habits).

- Physical Examination: A physical exam, including a digital rectal exam, may be performed to assess for hemorrhoids or fissures.

- Diagnostic Tests: Depending on the findings, your doctor may recommend further tests such as a colonoscopy, flexible sigmoidoscopy, or imaging studies to visualize the colon and rectum.

4. Management and Treatment:
- Dietary Changes: Increasing fiber intake can help soften stools and reduce straining during bowel movements, which may alleviate symptoms of hemorrhoids and fissures.

- Topical Treatments: Over-the-counter creams or ointments can help relieve discomfort from hemorrhoids or fissures.

- Surgical Options: In cases of severe hemorrhoids or persistent fissures, surgical intervention may be necessary.

5. Preventive Measures:
- Hydration: Drinking plenty of fluids can help maintain stool consistency.

- Regular Exercise: Physical activity can promote regular bowel movements and prevent constipation.

- Avoid Straining: Try not to strain during bowel movements, as this can exacerbate existing conditions.

In summary, while occasional rectal bleeding can be benign, your experience of fresh blood and accompanying symptoms warrants a thorough evaluation by a healthcare professional. It is crucial to address any underlying issues to prevent complications and ensure your overall health. If you have not already done so, I recommend scheduling an appointment with a gastroenterologist or your primary care physician to discuss your symptoms and receive appropriate care.

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