Mucus in Stool: Signs and Concerns for Your Health - Gastroenterology and Hepatology

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Mucus in stool?


Hello doctor, I have been experiencing mucus in my stool for about two months, and it is usually dark brown.
At first, I thought it was blood, and I used chopsticks to check, but it seemed to be a bit slimy.
Today, I suddenly noticed white mucus that feels the same.
Could this be a sign of colorectal cancer or something similar? How can I determine if there is blood in my stool?

Mr. Huang, 20~29 year old female. Ask Date: 2019/06/10

Dr. Chen Qifeng reply Gastroenterology and Hepatology


Seeing blood indicates a visible presence, while occult blood is not discernible to the naked eye.
First, adjust your diet and then monitor the situation.

Reply Date: 2019/06/10

More Info


Mucus in stool can be a concerning symptom, and it’s understandable to be worried about what it might indicate regarding your health. Mucus is a normal substance produced by the intestines to help lubricate the digestive tract and facilitate the passage of stool. However, when you notice an increase in mucus, especially if it is accompanied by other symptoms, it can be a sign of an underlying issue.

In your case, the presence of mucus in your stool for the past two months, particularly the deep coffee color and the sudden appearance of white mucus, warrants further investigation. While mucus itself is not an indicator of cancer, the context in which it appears is crucial. Conditions such as irritable bowel syndrome (IBS), inflammatory bowel disease (IBD) like Crohn's disease or ulcerative colitis, infections, or even benign polyps can cause mucus to be present in stool.
The color of your stool can also provide important clues. Dark brown or black stools can sometimes indicate bleeding in the upper gastrointestinal tract, while bright red blood usually suggests bleeding from the lower gastrointestinal tract. Mucus that appears white may indicate irritation or inflammation in the intestines.
To determine whether there is blood in your stool, you can look for several signs:
1. Color Changes: Blood in stool can change its color. Bright red blood may be visible on the surface of the stool or mixed in, while darker stools may indicate older blood.

2. Consistency: Blood may make the stool appear tarry or sticky.

3. Other Symptoms: Accompanying symptoms such as abdominal pain, changes in bowel habits, weight loss, or fatigue should be taken seriously and discussed with a healthcare provider.

It is important to consult a healthcare professional for a thorough evaluation. They may recommend tests such as a stool test to check for blood, a colonoscopy to visualize the colon, or imaging studies to assess for any abnormalities. Early detection and diagnosis are key in managing any potential health issues effectively.

In summary, while mucus in stool can be a benign finding, the duration and accompanying symptoms you described suggest that it is important to seek medical advice. A healthcare provider can help determine the underlying cause and recommend appropriate treatment or further testing if necessary. Remember, it’s always better to err on the side of caution when it comes to changes in your health.

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