Blood in Stool and Persistent Urge to Defecate - Surgery

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Blood in the stool with persistent urge to defecate?


Hello doctor, I noticed some bright red streaks of blood in my stool when I had a bowel movement the day before yesterday and yesterday.
There was no blood when I wiped.
I consumed sweet potatoes and Yakult yesterday, and since then, I've had a persistent urge to have a bowel movement.
What could be the cause of this?

Lin Xiansheng, 20~29 year old female. Ask Date: 2017/11/30

Dr. Yu Mingchang reply Surgery


Hello: Eating more fruits and vegetables is important.
The Department of Colorectal Surgery at Changhua Hospital, Ministry of Health and Welfare, cares about your health.

Reply Date: 2017/11/30

More Info


When you notice blood in your stool, especially if it's bright red, it can be concerning. The presence of blood can indicate several potential issues, ranging from benign to more serious conditions. In your case, since you mentioned that the blood was only present in the stool and not when wiping, this could suggest that the source of the bleeding is lower in the gastrointestinal tract, such as the rectum or anus.

One common cause of bright red blood in the stool is hemorrhoids, which are swollen veins in the lower rectum or anus that can bleed during bowel movements. Another possibility is anal fissures, which are small tears in the lining of the anus that can occur due to passing hard stools. Both conditions are generally not serious and can often be managed with dietary changes, increased fiber intake, and topical treatments.

However, other more serious conditions could also cause blood in the stool, such as diverticulosis, inflammatory bowel disease (IBD), or even colorectal cancer, especially if accompanied by other symptoms like persistent abdominal pain, changes in bowel habits, or weight loss. Given that you also mentioned a persistent urge to defecate, this could indicate irritation or inflammation in the bowel, possibly due to dietary factors or an underlying gastrointestinal issue.

The foods you consumed, such as sweet potatoes and yogurt, are generally healthy and should not cause blood in the stool. However, if you have a sensitivity to certain foods or if you are experiencing gastrointestinal distress, it could contribute to your symptoms.
It's important to monitor your symptoms closely. If the bleeding persists, increases in volume, or is accompanied by other concerning symptoms such as severe abdominal pain, fever, or significant changes in bowel habits, you should seek medical attention promptly. A healthcare provider may recommend diagnostic tests such as a stool test, colonoscopy, or imaging studies to determine the cause of the bleeding.

In summary, while the presence of blood in your stool can often be attributed to benign causes like hemorrhoids or fissures, it is essential to remain vigilant and consult a healthcare professional if your symptoms persist or worsen. Early diagnosis and treatment can help prevent potential complications and ensure your gastrointestinal health.

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