Rectal Bleeding: Causes and Concerns for Your Health - Gastroenterology and Hepatology

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Regarding large amounts of blood in the stool?


In the past week, I have not been having many bowel movements, but when I do, there is a significant amount of bright red blood that drips down from the beginning.
The amount of blood seems considerable.
I have a history of hemorrhoids, but this time the bleeding is completely painless, although it feels like a lot.
The stool is also small in quantity and soft.
Could you please provide some suggestions on what symptoms this might indicate? I am very concerned about the possibility of colorectal cancer.
I would appreciate any advice you can offer.

Vincent, 20~29 year old female. Ask Date: 2015/11/08

Dr. Chen Shidian reply Gastroenterology and Hepatology


Hello, Sir: Please visit the gastroenterology outpatient clinic to evaluate whether you should undergo an endoscopic examination (as it still resembles hemorrhoids, the vascular tissue around the anus, internal hemorrhoids often bleed without pain, while anal fissures and external hemorrhoids are painful).
Changhua Hospital cares about your health.
Chen Shidian

Reply Date: 2015/11/08

More Info


Rectal bleeding can be a concerning symptom, and it is important to understand the potential causes and implications for your health. Based on your description, you have experienced significant rectal bleeding with soft stools and no associated pain. While this might suggest a few possible conditions, it is crucial to approach this matter with caution and seek medical attention.

One of the most common causes of rectal bleeding, especially in individuals with a history of hemorrhoids, is hemorrhoidal bleeding. Hemorrhoids can be internal or external and may cause bright red blood during bowel movements. The blood is typically seen on the toilet paper or in the toilet bowl, and it may not be accompanied by pain, particularly if the hemorrhoids are internal. However, if you have previously been diagnosed with hemorrhoids, it is still essential to monitor the situation closely, as changes in bleeding patterns can indicate complications or the development of new issues.

Another potential cause of rectal bleeding is anal fissures, which are small tears in the lining of the anus. These can occur due to straining during bowel movements, especially if you have experienced constipation. Although fissures often cause pain during and after bowel movements, it is possible for some individuals to experience bleeding without significant discomfort.

In more serious cases, rectal bleeding can be a sign of conditions such as diverticulosis, inflammatory bowel disease (IBD), or colorectal cancer. Diverticulosis involves the formation of small pouches in the colon wall, which can become inflamed or bleed. IBD, which includes Crohn's disease and ulcerative colitis, can cause inflammation and ulceration in the gastrointestinal tract, leading to bleeding. Colorectal cancer, while less common, is a serious concern, especially if there are changes in bowel habits, unexplained weight loss, or a family history of colorectal cancer.

Given your concerns about colorectal cancer, it is important to consider risk factors such as age, family history, and any other gastrointestinal symptoms you may be experiencing. While your current symptoms may not immediately suggest cancer, it is essential to rule out this possibility through appropriate medical evaluation.

Here are some recommendations for managing your symptoms and addressing your concerns:
1. Seek Medical Evaluation: It is crucial to consult with a healthcare professional, preferably a gastroenterologist, who can perform a thorough evaluation. This may include a physical examination, a review of your medical history, and possibly diagnostic tests such as a colonoscopy to visualize the colon and identify any abnormalities.

2. Monitor Symptoms: Keep track of your symptoms, including the frequency and amount of bleeding, any changes in bowel habits, and any associated symptoms such as abdominal pain, weight loss, or changes in appetite. This information will be valuable for your healthcare provider.

3. Dietary Changes: Increasing your fiber intake through fruits, vegetables, and whole grains can help promote regular bowel movements and reduce straining. Staying well-hydrated is also essential.

4. Avoid Straining: If you experience constipation, consider using stool softeners or mild laxatives as recommended by your healthcare provider to ease bowel movements and prevent further irritation.

5. Follow-Up Care: If you have a history of hemorrhoids or other gastrointestinal issues, regular follow-up with your healthcare provider is important to monitor your condition and address any new symptoms promptly.

In conclusion, while your symptoms may be related to benign conditions such as hemorrhoids or anal fissures, it is essential to take rectal bleeding seriously and seek medical advice. Early diagnosis and intervention can help address any underlying issues and provide peace of mind regarding your health.

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