Dark Red Streaks in Stool: Should You Worry? - Gastroenterology and Hepatology

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The stool appears to have blood in it?


Hello doctor, I recently observed that there are several dark red spots in my stool, and when I touch them with toilet paper, they break apart...
They look somewhat like blood clots attached to the stool.
They are thin and somewhat red.
Could this be colon cancer? The red color is not very prominent, but the dark red is noticeable.
I had a fecal occult blood test done a month ago, and it was normal, but my stool is irregularly shaped.

Qiu Xiaomi, 10~19 year old female. Ask Date: 2015/01/12

Dr. Chen Qifeng reply Gastroenterology and Hepatology


Hello: Based on the symptoms, the bleeding points are located near the anus or rectum, and hemorrhoids are certainly the most likely cause.
If the bleeding persists, please seek medical attention from a colorectal surgeon.
Wishing you safety and health.
Dr.
Chen Qifeng, Gastroenterology Department, Taoyuan Hospital, Ministry of Health and Welfare.

Reply Date: 2015/01/12

More Info


When it comes to observing dark red streaks in your stool, it is essential to approach the situation with caution and awareness of potential underlying health issues. The presence of dark red streaks or clots in your stool can be concerning, and while it may not always indicate a severe condition, it is crucial to understand the possible causes and when to seek medical attention.

Firstly, the appearance of dark red streaks in stool can be attributed to several factors. One common cause is the presence of blood, which can originate from various parts of the gastrointestinal (GI) tract. The color of the blood can provide clues about its source; for instance, bright red blood typically indicates bleeding from the lower GI tract, such as the rectum or colon, while darker blood may suggest bleeding from higher up in the GI tract, such as the stomach or small intestine.

In your case, the dark red streaks that resemble blood clots could indicate several conditions, including:
1. Hemorrhoids: Swollen veins in the rectum or anus can bleed, leading to bright red blood on the stool or toilet paper. However, if the blood appears dark red, it may suggest a different source.

2. Anal Fissures: Small tears in the lining of the anus can also cause bleeding, often accompanied by pain during bowel movements.

3. Diverticular Disease: Diverticula are small pouches that can form in the colon wall. If these pouches become inflamed or infected, they can bleed, resulting in dark red streaks in the stool.

4. Polyps or Colorectal Cancer: While less common, polyps (growths on the colon lining) or colorectal cancer can cause bleeding. The presence of dark red streaks could be a sign of a more serious condition, especially if accompanied by other symptoms such as changes in bowel habits, unexplained weight loss, or abdominal pain.

5. Gastrointestinal Infections: Certain infections can cause inflammation and bleeding in the GI tract, leading to blood in the stool.

Given that you recently had a negative fecal occult blood test, which is designed to detect hidden blood in the stool, it is reassuring but does not entirely rule out the possibility of bleeding from other sources. The irregular shape of your stool and the presence of dark red streaks warrant further investigation.

It is essential to monitor your symptoms closely. If you experience any of the following, you should seek medical attention promptly:
- Persistent or worsening symptoms
- Significant changes in bowel habits (e.g., diarrhea, constipation)
- Abdominal pain or discomfort
- Unexplained weight loss
- Fatigue or weakness
In conclusion, while dark red streaks in your stool can be alarming, they may not always indicate a severe condition. However, due to the potential seriousness of some underlying causes, it is crucial to consult a healthcare professional for a thorough evaluation. They may recommend further diagnostic tests, such as a colonoscopy, to determine the exact cause of your symptoms and provide appropriate treatment. Remember, early detection and intervention are key to managing any potential health issues effectively.

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