Rectal Bleeding: Causes and When to Seek Help - Surgery

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Rectal bleeding


Hello Doctor, from last Thursday to Saturday, I experienced bleeding during bowel movements, but it wasn't blood in the stool.
There was blood on the toilet paper when I wiped, but I didn't feel any discomfort, just a little irritation from possibly wiping too hard.
Since Saturday night, I've had four bowel movements without any bleeding.
I researched colorectal cancer online and found that I don't have many of the associated symptoms.
The only change is that I've lost 7 kilograms since last month, but that might be due to work and exercise, as I generally don't eat much.
I have previously experienced bleeding due to anal fissures and skin irritation.
I would like to seek your advice, please.

Mr. Jiang, 20~29 year old female. Ask Date: 2022/12/26

Dr. Zhang Shuhao reply Surgery


There are three common causes of rectal bleeding: 1.
Anal fissures or skin abrasions, characterized by minimal blood loss accompanied by a sharp pain at the site of the injury.
2.
Ruptured thrombosed hemorrhoids, which typically result in slightly more bleeding than the first cause, usually occurring after straining during bowel movements, and may be painless or only cause mild discomfort.
3.
Gastrointestinal bleeding related to conditions such as polyps, ulcers, or tumors, which presents with darker blood and is often accompanied by changes in bowel habits or abdominal symptoms; this is less common in younger individuals.
Based on your description, it seems closer to the first scenario.
You can start with warm sitz baths and the application of topical ointments.
If you are concerned about tumors, the best approach is to seek medical evaluation.
Sometimes a digital rectal exam can reveal the source of bleeding, and based on individual circumstances, a colonoscopy may be considered.

Reply Date: 2022/12/26

More Info


Rectal bleeding can be a concerning symptom, and understanding its potential causes is crucial for determining when to seek medical help. Based on your description, it appears that you experienced rectal bleeding primarily during bowel movements, with blood noted on toilet paper but no blood mixed with stool. This type of bleeding can often be attributed to several benign conditions, but it is essential to consider all possibilities.

One common cause of rectal bleeding, especially in individuals who have a history of straining during bowel movements, is anal fissures. These are small tears in the lining of the anus that can occur due to hard stools or excessive straining. They can cause sharp pain during bowel movements and may lead to minor bleeding, which could explain the blood you observed on the toilet paper. Given that you mentioned possibly wiping too hard, this could indeed be a contributing factor.

Another potential cause is hemorrhoids, which are swollen blood vessels in the rectal area. They can be internal or external and may cause bleeding, especially during bowel movements. Hemorrhoids can also lead to discomfort, itching, and pain, but they often do not cause significant health issues.

You also mentioned a recent weight loss of 7 kilograms over the past month. While weight loss can be attributed to various factors, including increased physical activity or dietary changes, it is essential to monitor this symptom closely. Unintentional weight loss can sometimes be a sign of underlying health issues, including gastrointestinal disorders or malignancies. However, given your description of the bleeding and the absence of other concerning symptoms, it is less likely that this is related to a serious condition like colorectal cancer, especially if you have no other symptoms such as changes in bowel habits, abdominal pain, or changes in appetite.

Since you have a history of anal fissures and skin irritation, it is possible that your recent bleeding is related to these issues. It is important to maintain good bowel habits, including staying hydrated, consuming a high-fiber diet, and avoiding excessive straining during bowel movements. Over-the-counter treatments, such as topical creams for hemorrhoids or fissures, may also provide relief.

However, there are specific situations where you should seek medical attention. If you experience any of the following, it is crucial to consult a healthcare professional:
1. Persistent Bleeding: If the bleeding recurs or does not resolve, it is essential to have it evaluated.

2. Severe Pain: If you experience significant pain during bowel movements or at rest, this may indicate a more serious issue.

3. Changes in Bowel Habits: If you notice changes in your bowel habits, such as diarrhea or constipation that lasts more than a few days.

4. Other Symptoms: If you develop additional symptoms such as fever, chills, or abdominal swelling.

5. Unexplained Weight Loss: If the weight loss continues or is accompanied by other gastrointestinal symptoms.

In conclusion, while your recent rectal bleeding may be related to benign conditions such as anal fissures or hemorrhoids, it is essential to monitor your symptoms closely. Maintaining a healthy diet and bowel habits can help prevent further issues. If the bleeding recurs or you develop new symptoms, do not hesitate to seek medical advice for a thorough evaluation and appropriate management.

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