Rectal Bleeding: Causes and When to Seek Help - Surgery

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Blood in the stool?


Hello doctor, I am 25 years old.
A week ago, I experienced severe abdominal cramping and diarrhea that came on suddenly.
After using the restroom, I noticed fresh blood when wiping, but since it was diarrhea, I couldn't see if there was blood in the stool.
After the diarrhea, the abdominal pain subsided.
Later that afternoon, I passed gas and noticed a significant amount of mucus with blood streaks, which was somewhat brownish and contained bright red blood.
That evening, I visited a proctologist who performed an anoscopy and digital rectal exam.
He mentioned that I had some skin tears and mild inflammation in the rectum.

Two days later, feeling uneasy, I went to another clinic for a check-up, where they also performed a digital rectal exam and anoscopy.
The doctor said my rectum appeared normal and that there were no issues with the anus, suggesting it might be related to hemorrhoids and advised me to monitor for any further bleeding.
Since that day, I have had normal bowel movements for five days without any blood, and my abdomen feels normal.
However, a few days ago, I started feeling a strange sensation in my anus, as if it was involuntarily contracting, along with a persistent urge to have a bowel movement.
I can't quite describe it, but it feels uncomfortable.
I would like to ask the doctor what this situation might indicate.
Could it be colon cancer or hemorrhoids? Should I undergo a colonoscopy, or can I just observe since there has been no bleeding? I'm a bit worried, especially since I'm only 25 years old.
I'm also concerned that the sudden diarrhea might have caused the skin tears and bleeding.
Additionally, I have a fear of colonoscopy due to my anxiety and arrhythmia, and I'm worried that I might be too anxious to undergo the procedure.
I would appreciate your insights on my concerns.

Yu Fu, 20~29 year old female. Ask Date: 2024/02/27

Dr. Zhang Shuhao reply Surgery


Based on the symptoms you described, there are two issues to consider.
First, the abdominal cramping, diarrhea, and mucus in the stool are indicative of enteritis, which is often caused by food or viral factors in young individuals.
Increasing fluid intake and following a bland diet for a period of time can lead to improvement.

Secondly, the presence of fresh blood when wiping could be due to hemorrhoids, which can be exacerbated by diarrhea, leading to symptoms such as anal swelling, pain, and bleeding.
A digital rectal examination or anoscopy can confirm the diagnosis.
It is advisable to increase fluid intake, take warm sitz baths, and use medications to alleviate hemorrhoids and inflammation.
Given your age, unless there is a relevant family history, the likelihood of colorectal cancer is low.
However, if you are genuinely concerned, you may consider undergoing a colonoscopy, which can be performed under sedation.
Please note that there may be some out-of-pocket expenses according to health insurance regulations.

Reply Date: 2024/02/27

More Info


Rectal bleeding can be a concerning symptom, and it's understandable that you're feeling anxious about it, especially given your age and the recent experiences you've had. Let's break down your situation and discuss potential causes, when to seek further help, and the importance of monitoring your symptoms.

From your description, it seems that you experienced acute abdominal pain followed by diarrhea, which was accompanied by fresh blood on toilet paper. The presence of blood in the stool, especially after diarrhea, can often be attributed to several factors, including hemorrhoids, anal fissures, or even gastrointestinal infections. The fact that you also noted mucus with blood suggests that there may be some irritation or inflammation in the rectal area.

1. Potential Causes:
- Hemorrhoids: These are swollen veins in the lower rectum or anus that can cause bleeding, especially during bowel movements. They are quite common and can be exacerbated by straining during bowel movements or prolonged sitting.

- Anal Fissures: These are small tears in the lining of the anus, often caused by passing hard stools or straining. They can lead to sharp pain and bleeding during bowel movements.

- Gastrointestinal Infections: Infections can cause diarrhea and may lead to inflammation in the intestines, which can result in bleeding.

- Inflammatory Bowel Disease (IBD): Conditions like ulcerative colitis or Crohn's disease can cause rectal bleeding and should be ruled out if symptoms persist.

- Polyps or Colorectal Cancer: While less common in younger individuals, these can also cause rectal bleeding. However, the likelihood is significantly lower at your age.

2. When to Seek Help:
- Since you have already undergone examinations, including a digital rectal exam and anoscopy, and were told that there were no significant findings, it is a positive sign. However, if you experience any of the following, you should seek medical attention promptly:
- Persistent or worsening bleeding.

- Significant changes in bowel habits (e.g., prolonged diarrhea or constipation).

- Unexplained weight loss.

- Severe abdominal pain.

- Symptoms of anemia (fatigue, weakness, pale skin).

3. Monitoring and Next Steps:
- Given that you have not had any further bleeding for five days and your bowel movements have returned to normal, it may be reasonable to continue monitoring your symptoms. However, if the discomfort in your rectal area persists or worsens, or if you experience any new symptoms, it would be advisable to consult a gastroenterologist for further evaluation.

- A colonoscopy is a more comprehensive examination that can help visualize the entire colon and rectum, allowing for the detection of any abnormalities. While it can be intimidating, especially for someone with anxiety, it is a valuable tool for diagnosing potential issues. Discuss your concerns with your healthcare provider; they may offer sedation options to help you feel more comfortable during the procedure.

4. Addressing Your Concerns:
- It's natural to worry about serious conditions like colorectal cancer, especially when experiencing symptoms like rectal bleeding. However, the majority of cases in younger individuals are often related to benign conditions such as hemorrhoids or fissures.
- If your anxiety about medical procedures is significant, consider speaking with a mental health professional or your doctor about strategies to manage your anxiety before undergoing any further tests.

In summary, while your symptoms warrant attention, the absence of ongoing bleeding and normal bowel habits are encouraging signs. Continue to monitor your condition, and don't hesitate to seek further evaluation if your symptoms change or if you have ongoing concerns. Your health and peace of mind are paramount, and addressing these issues with your healthcare provider is the best course of action.

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