Blood in Stool: Causes and Concerns for Gastrointestinal Health - Gastroenterology and Hepatology

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Inability to pass stool accompanied by blood in the stool?


On the evening of September 11, I experienced abdominal pain and was unable to have a bowel movement.
While sitting on the toilet, my legs felt numb, and despite straining, I could only pass a few segments of yellowish, formed stool that resembled pieces washed away.
After resting, the pain returned, and when I tried to go again, I expelled some coagulated blood in small amounts, with one piece being flat and bright red.
There was also some blood when wiping.
This continued for two days, during which I had about four to five bowel movements.
I also passed some harder, yellow-brown stools and softer stools, but the softer stools did not have any blood.
What could this indicate?

Dou Da, 50~59 year old female. Ask Date: 2021/09/13

Dr. Cai Jinji reply Gastroenterology and Hepatology


Hello, Ms.
Douda: It is recommended that you promptly schedule an appointment with a colorectal surgeon for consultation.
Director Cai Jin-ji from the Department of Hepatobiliary and Gastroenterology at Nantou Hospital.

Reply Date: 2021/09/13

More Info


Understanding blood in stool is crucial for assessing gastrointestinal health, as it can indicate a range of underlying issues. Based on your description, it appears you are experiencing a combination of symptoms, including abdominal pain, difficulty in bowel movements, and the presence of blood in your stool. These symptoms can be concerning, and it is essential to consider various potential causes.

Firstly, the presence of blood in your stool can arise from several sources within the gastrointestinal tract. The blood you described as "fresh red" typically suggests that it is coming from the lower gastrointestinal tract, such as the rectum or colon. Common causes of blood in the stool include hemorrhoids, anal fissures, diverticular disease, inflammatory bowel disease (IBD), and colorectal polyps or cancer.

1. Hemorrhoids: These are swollen blood vessels in the rectum or anus that can cause bright red blood during bowel movements, especially if there is straining involved. Given that you mentioned difficulty in passing stool, this could be a likely cause.

2. Anal Fissures: These are small tears in the lining of the anus that can occur due to passing hard or large stools. They can cause sharp pain and bleeding during bowel movements.

3. Diverticular Disease: This condition involves the formation of small pouches (diverticula) in the colon wall, which can become inflamed or infected, leading to bleeding.

4. Inflammatory Bowel Disease (IBD): Conditions such as Crohn's disease or ulcerative colitis can cause inflammation in the gastrointestinal tract, leading to symptoms like diarrhea, abdominal pain, and blood in the stool.

5. Colorectal Polyps or Cancer: While less common, the presence of blood can also indicate more serious conditions like polyps or colorectal cancer, especially if there are changes in bowel habits or other concerning symptoms.

Your symptoms of abdominal pain, difficulty in passing stool, and the presence of both hard and soft stools suggest that you may be experiencing a combination of constipation and possible irritation or injury to the rectal area, potentially from straining. The fact that you have had episodes of blood with some bowel movements but not others may indicate that the bleeding is intermittent and possibly related to the consistency of your stool.

Given that you have experienced these symptoms for two days, it is advisable to seek medical attention. A healthcare professional can perform a thorough evaluation, which may include a physical examination, a review of your medical history, and possibly diagnostic tests such as a colonoscopy or imaging studies to determine the exact cause of your symptoms.

In the meantime, consider the following recommendations to manage your symptoms:
- Hydration: Ensure you are drinking plenty of fluids to help soften your stool.

- Dietary Changes: Incorporate more fiber-rich foods into your diet, such as fruits, vegetables, and whole grains, to promote regular bowel movements.

- Avoid Straining: Try to avoid straining during bowel movements, as this can exacerbate bleeding and discomfort.

In summary, while there are several potential causes for the blood in your stool, it is essential to consult with a healthcare provider to obtain an accurate diagnosis and appropriate treatment. Early intervention can help address any underlying issues and prevent complications.

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