Mucus in Stool: Causes and When to Seek Help - Gastroenterology and Hepatology

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Mucus in stool


Hello Dr.
Yang, I have been feeling some discomfort in my abdomen over the past couple of days.
Sometimes I have a strong urge to have a bowel movement, but initially, it’s not stool; it’s more like passing gas, followed by the expulsion of a viscous liquid before I can finally pass stool (about 1 to 2 times a day).
After I finish, I still feel the urge to go, but there’s nothing left.
There is no blood in my stool.
Could this be due to eating too much greasy food? Do I need to undergo a colonoscopy?

Nifei, 20~29 year old female. Ask Date: 2015/12/20

Dr. Yang Zhichao reply Gastroenterology and Hepatology


Dear Miss Nifi, based on your condition, I would recommend that you first go to the hospital for a stool examination to check for any issues.
If any problems are found, further tests can be conducted.
Changhua Hospital cares about your health.

Reply Date: 2015/12/20

More Info


Understanding mucus in stool can be a perplexing issue for many individuals, and it is essential to recognize the potential causes and when to seek medical help. Mucus is a slippery substance produced by the mucous membranes in the intestines. It plays a crucial role in lubricating the intestines and facilitating the passage of stool. However, the presence of an unusual amount of mucus in the stool can indicate underlying health issues.

In your case, the symptoms you describe—feeling of abdominal discomfort, frequent urges to defecate, and the expulsion of thick, mucous-like fluid before passing stool—can be indicative of several gastrointestinal conditions. While occasional mucus in stool can be normal, especially after consuming certain foods, persistent or excessive mucus can signal a problem.

One common cause of increased mucus in stool is irritable bowel syndrome (IBS), a functional gastrointestinal disorder characterized by symptoms such as abdominal pain, bloating, and changes in bowel habits. IBS can lead to increased mucus production as the intestines react to various triggers, including stress, certain foods, or hormonal changes.

Another potential cause could be an infection or inflammation in the gastrointestinal tract, such as gastroenteritis or colitis. These conditions can lead to increased mucus production as the body attempts to protect and heal the intestinal lining. Inflammatory bowel diseases (IBD), such as Crohn's disease or ulcerative colitis, can also present with symptoms of mucus in stool, along with abdominal pain, diarrhea, and sometimes blood in the stool.

Dietary factors may also play a role in your symptoms. Consuming a diet high in fat or processed foods can lead to gastrointestinal discomfort and changes in bowel habits. However, it is essential to note that while dietary changes can influence mucus production, they are not the sole cause of persistent symptoms.

Given your symptoms, it is advisable to seek medical attention, particularly if they persist or worsen. A healthcare provider may recommend a thorough evaluation, which could include a physical examination, blood tests, and possibly imaging studies or a colonoscopy. A colonoscopy is a procedure that allows for direct visualization of the colon and can help identify any abnormalities, such as inflammation, polyps, or other conditions that may be causing your symptoms.

In summary, while occasional mucus in stool can be normal, persistent symptoms warrant further investigation. Conditions such as IBS, infections, or inflammatory bowel diseases could be contributing to your symptoms. It is crucial to consult with a healthcare professional who can provide a comprehensive evaluation and appropriate management based on your specific situation. Early intervention can lead to better outcomes and help alleviate discomfort.

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