Rectal Bleeding: Causes and Concerns for Constipation Relief - Surgery

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Rectal bleeding


Due to having a larger and longer intestine, I have always experienced issues with constipation.
Recently, I started taking laxatives (Lactulose) to alleviate my constipation, taking them about three times a week.
Initially, I took two pills, but now I need to take eight pills to have a bowel movement, which results in diarrhea without any formed stools.
I have been using them for about six months.
In my last two bowel movements, I noticed a small amount of mucus and blood streaks on the toilet paper, and there was a little bit in the toilet as well.
Additionally, I have some pain around the anus.
What could be the issue? Could it be a tumor or colorectal cancer? If I stop using the laxatives, will I become constipated again? I eat plenty of fruits and vegetables and drink water, but I am worried that I have developed a dependency on the laxatives, and that stopping them will cause my intestines to stop moving.
What should I do?

Angela, 10~19 year old female. Ask Date: 2018/10/14

Dr. Ke Fangxu reply Surgery


At the age of 17, the likelihood of developing colorectal cancer can be considered negligible.
Based on your description, it seems more like mild hemorrhoidal bleeding.
It is recommended to start with a light diet and maintain a good lifestyle.
Spicy, irritating, and greasy foods should be avoided.
Increasing dietary fiber intake can also be beneficial.
Regular exercise helps promote intestinal motility.
Medications like Laxatives can lead to dependency and are not suitable for long-term use.
If symptoms persist without improvement, it is advisable to consult a physician for medication adjustment.

Reply Date: 2018/10/14

More Info


Rectal bleeding, especially when accompanied by symptoms such as constipation, mucus, and pain, can be concerning and warrants careful evaluation. The symptoms you describe, including the presence of blood and mucus on toilet paper and slight bleeding in the toilet, could be indicative of several conditions, some of which may require medical attention.

Firstly, it’s important to understand that rectal bleeding can arise from various causes. Common reasons include hemorrhoids, anal fissures, and gastrointestinal issues. Hemorrhoids are swollen veins in the rectum or anus that can cause bleeding, especially during bowel movements. Anal fissures, which are small tears in the lining of the anus, can also lead to pain and bleeding, particularly if you are experiencing constipation and straining during bowel movements.

Given your history of chronic constipation and the use of laxatives, it’s possible that the increased straining could have contributed to the development of hemorrhoids or fissures. The fact that you have been using laxatives for an extended period can lead to dependency, where your bowel may become less responsive to natural stimuli, resulting in a cycle of constipation and reliance on laxatives.

The presence of mucus and blood can also raise concerns about other gastrointestinal conditions, including inflammatory bowel disease (IBD), diverticulitis, or even colorectal polyps. While the likelihood of these more serious conditions, such as colorectal cancer, increases with age and certain risk factors, it is essential not to jump to conclusions without proper medical evaluation.

To address your concerns about the potential for tumors or colorectal cancer, it is crucial to consult a healthcare professional. They may recommend a thorough examination, which could include a digital rectal exam, colonoscopy, or imaging studies to rule out any serious underlying conditions. Early detection is key in managing any potential issues effectively.

Regarding your concerns about stopping laxatives, it is advisable to do so gradually rather than abruptly. This approach can help your body adjust and potentially regain its natural bowel function. Incorporating a high-fiber diet, staying well-hydrated, and engaging in regular physical activity can significantly improve bowel regularity. Foods rich in fiber, such as fruits, vegetables, whole grains, and legumes, can help bulk up your stool and promote regular bowel movements.

If you find that dietary changes and lifestyle modifications are insufficient, it may be beneficial to discuss alternative treatments with your healthcare provider. They can guide you on safe and effective options for managing constipation without the risks associated with long-term laxative use.

In summary, while your symptoms could be related to common issues such as hemorrhoids or anal fissures, it is essential to seek medical advice to rule out more serious conditions. A healthcare professional can provide a comprehensive evaluation and recommend appropriate treatment strategies to manage your constipation and any associated symptoms effectively. Remember, addressing these concerns early can lead to better outcomes and improved quality of life.

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