Rectal Bleeding: Causes and When to Seek Help - Surgery

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Rectal bleeding


Hello, Doctor.
About three weeks ago (around July 17), I noticed blood on the toilet paper after having a bowel movement.
I went to see a colorectal surgeon, who performed a digital examination and diagnosed me with an acute anal fissure.
After that, I applied ointment and took stool softeners, and after a few days, there was no more bleeding.
However, last Tuesday (August 1), I experienced diarrhea and again noticed blood on the toilet paper while wiping.
I returned to the colorectal surgeon, who again diagnosed me with an anal fissure and internal hemorrhoids, but said there were no other issues.
Last Saturday (August 5), while using the restroom, I wiped about five to six times and saw faint yellow marks, along with small blood spots and streaks.
I would like to know if this situation is caused by the anal fissure (I felt some pain at the anal opening while wiping).
For the next few days, there was no more bleeding, but today (August 9), when I wiped for the second time, I noticed blood on the toilet paper again, and it increased with subsequent wipes.
The doctor mentioned during my last visit that I am only 22 years old and do not need a colonoscopy yet.
I am very concerned that this might be related to colorectal pathology.
Thank you for your response.

Shih, 20~29 year old female. Ask Date: 2023/08/09

Dr. Zhang Shuhao reply Surgery


The most common cause of rectal bleeding in young individuals is anal fissure bleeding.
If the location of pain and the results of the physician's digital examination are consistent, and there are no abnormalities found during the rectal examination, treatment for the anal fissure can be initiated.
A colonoscopy should only be considered if there is a family history of colorectal cancer, or if there are abdominal symptoms or changes in bowel habits.

Reply Date: 2023/08/09

More Info


Rectal bleeding can be a concerning symptom, and understanding its causes is crucial for determining when to seek medical help. Based on your description, it appears that you have been experiencing rectal bleeding related to anal fissures and possibly hemorrhoids. Let's break down the potential causes and when you should consider further evaluation.


Causes of Rectal Bleeding
1. Anal Fissures: These are small tears in the lining of the anus, often caused by passing hard stools or straining during bowel movements. They can lead to sharp pain and bleeding during or after bowel movements. Your description of pain and blood on toilet paper aligns with this condition.

2. Hemorrhoids: These are swollen veins in the rectal area that can cause bleeding, especially during bowel movements. They can be internal (inside the rectum) or external (under the skin around the anus). The presence of blood after wiping could indicate the presence of hemorrhoids, particularly if the bleeding is bright red.

3. Diverticular Disease: While less common in younger individuals, diverticulosis can lead to diverticulitis, which may cause bleeding. However, this is typically associated with abdominal pain and changes in bowel habits.

4. Inflammatory Bowel Disease (IBD): Conditions like Crohn's disease or ulcerative colitis can cause rectal bleeding, but they usually present with additional symptoms such as diarrhea, abdominal pain, and weight loss.

5. Colorectal Polyps or Cancer: Although you are young and your doctor has indicated that a colonoscopy is not necessary at this time, it is important to be aware that persistent bleeding, especially if it changes in character or is accompanied by other symptoms, could warrant further investigation.


When to Seek Help
Given your situation, here are some guidelines on when to seek further medical attention:
- Persistent Bleeding: If you continue to see blood on toilet paper or in your stool, especially if it becomes more frequent or changes in color (e.g., darker blood), you should consult your healthcare provider.

- Severe Pain: If the pain associated with bowel movements becomes severe or debilitating, it may indicate a more serious issue that requires evaluation.

- Changes in Bowel Habits: If you experience significant changes in your bowel habits, such as prolonged diarrhea or constipation, this could indicate an underlying condition that needs to be addressed.

- Accompanying Symptoms: If you develop additional symptoms such as fever, weight loss, or severe abdominal pain, these could be signs of a more serious condition that requires immediate medical attention.


Management and Recovery
For managing your current symptoms, here are some recommendations:
1. Dietary Changes: Increase your fiber intake to help soften stools and reduce straining during bowel movements. Foods rich in fiber include fruits, vegetables, whole grains, and legumes.

2. Hydration: Drink plenty of water to help maintain soft stools.

3. Topical Treatments: Continue using any prescribed topical medications for your anal fissures or hemorrhoids. Over-the-counter creams may also provide relief.

4. Warm Baths: Soaking in warm water can help soothe the anal area and promote healing.

5. Avoid Straining: Try to avoid straining during bowel movements, as this can exacerbate fissures and hemorrhoids.

6. Follow-Up: Keep in touch with your healthcare provider, especially if symptoms persist or worsen. They may recommend further evaluation or treatment options.

In conclusion, while your symptoms may be related to anal fissures and hemorrhoids, it is essential to monitor your condition closely. If you experience any concerning changes, do not hesitate to seek further medical evaluation. Your health is paramount, and addressing these symptoms early can help prevent complications and promote healing.

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