Rectal Bleeding: Is It a Sign of Anal Fissures? - Surgery

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There is no blood in the stool, but there is blood on the toilet paper when wiping?


Due to constipation caused by traveling last week, I have been using enemas more frequently over the past two to three days.
I have gradually adjusted and have not used enemas recently.
My stool color is normal, but I noticed dark red streaks of blood when wiping, and there is slight pain in the anal area.
Could this be a case of anal fissure? Thank you, doctor.

Lu, 20~29 year old female. Ask Date: 2016/08/17

Dr. Ke Fangxu reply Surgery


Based on your description, it seems to be a typical symptom of anal fissure, which is characterized by pain during bowel movements accompanied by slight bleeding.
If there is concurrent bleeding from hemorrhoids, the amount of blood may be more significant.
The primary cause of anal fissures is usually hard stools, but diarrhea, frequent bowel movements, or prolonged straining can also lead to fissures.
It is recommended to improve bowel habits and to take warm sitz baths to alleviate symptoms.
Topical ointments and suppositories can also be used for treatment.
If symptoms persist for more than a week without improvement, it is advisable to consult a physician to identify the underlying issue.

Reply Date: 2016/08/17

More Info


Rectal bleeding can be concerning, and it’s understandable that you’re seeking clarity regarding your symptoms. Based on your description, it is indeed possible that the dark red blood you observed on the toilet paper, accompanied by mild anal pain, could be indicative of an anal fissure.
Anal fissures are small tears in the lining of the anus, often caused by passing hard stools, which can occur due to constipation. When you mentioned that you had been experiencing constipation and had been using enemas frequently, this could have contributed to the development of an anal fissure. The pain associated with fissures is typically sharp and can occur during or after bowel movements. The blood is usually bright red and may appear on the toilet paper or in the toilet bowl, but in some cases, it can also be darker if it has been in contact with stool.

However, while anal fissures are a common cause of rectal bleeding, they are not the only potential cause. Other conditions, such as hemorrhoids, diverticular disease, or even more serious issues like colorectal polyps or cancer, can also lead to rectal bleeding. Given your family history of colorectal cancer, it is particularly important to monitor your symptoms closely.

Here are some key points to consider:
1. Symptoms of Anal Fissures: The typical symptoms include sharp pain during bowel movements, a visible tear or crack in the skin around the anus, and bright red blood on the toilet paper or stool. The pain can sometimes linger after a bowel movement.

2. Management: If you suspect an anal fissure, it’s essential to maintain soft stools to prevent further tearing. This can be achieved through dietary changes, such as increasing fiber intake (fruits, vegetables, whole grains), staying hydrated, and possibly using stool softeners. Warm sitz baths can also help soothe the area and promote healing.

3. When to Seek Medical Attention: If the bleeding persists, increases in volume, or if you experience severe pain, it is crucial to consult a healthcare provider. They may perform a physical examination and possibly recommend further investigations, such as a colonoscopy, especially given your family history of colorectal cancer.

4. Potential for Other Conditions: While fissures are common, it’s important to rule out other causes of rectal bleeding. If you notice changes in your bowel habits, such as diarrhea, constipation, or changes in stool consistency, or if you experience additional symptoms like weight loss or abdominal pain, these warrant further evaluation.

5. Follow-Up: Given your recent history of constipation and the use of enemas, it’s advisable to keep track of your bowel movements and any associated symptoms. If the bleeding continues or worsens, or if you develop new symptoms, follow up with a healthcare provider for a thorough evaluation.

In conclusion, while your symptoms may suggest an anal fissure, it is essential to remain vigilant and consult a healthcare professional for an accurate diagnosis and appropriate management. Early intervention can help prevent complications and ensure your overall health and well-being.

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