Unusual Gas and Liquid Discharge: When to Seek Medical Help - Gastroenterology and Hepatology

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Passing gas with a foul odor?


Hello Doctor, I am 22 years old and I would like to ask about some issues related to my colon.
For the past couple of days, I have been experiencing excessive watery flatulence.
At first, I thought it was just normal gas, but when I wiped my anus with toilet paper, I was shocked to find that it was covered in a liquid resembling bright yellow fluid, which had no fecal odor but instead a very unpleasant and strange smell that seemed to originate from my intestines.
I can't quite describe the odor, but it was so off-putting that I now feel the need to sit on the toilet just to pass gas.

I later noticed that if I pass gas and it comes out as a clean "puff," it is normal, but if it sounds like a series of "pops," it results in the aforementioned disgusting yellow liquid.
I have no idea what this could be, and I am wondering if I should go to the hospital for an examination.
Last weekend, I went out and had a rich meal, and when I returned home on Sunday, I had a large and smooth bowel movement.
However, the next day, I discovered this watery gas...
The smell is truly unbearable, possibly one of the worst I have ever encountered.
I would appreciate your guidance on this matter.
Thank you.

Niming, 20~29 year old female. Ask Date: 2023/11/22

Dr. Chen Shidian reply Gastroenterology and Hepatology


It should be colonic mucus, which is related to digestion and is still considered normal.
Further observation regarding its correlation with diet can be conducted.

Reply Date: 2023/11/22

More Info


It sounds like you're experiencing some concerning gastrointestinal symptoms, and it's understandable to feel anxious about them. Based on your description, the sudden onset of excessive gas accompanied by a yellowish liquid discharge, especially when it has a foul odor, could indicate a few potential issues that warrant medical attention.

Firstly, the presence of a yellowish liquid could suggest that you are experiencing some form of gastrointestinal disturbance. This could be related to a variety of conditions, including but not limited to:
1. Infection: Gastrointestinal infections, whether viral, bacterial, or parasitic, can lead to changes in bowel habits, increased gas production, and unusual discharge. If you recently consumed food that was undercooked or contaminated, this could be a factor.

2. Malabsorption: Conditions such as celiac disease or lactose intolerance can lead to malabsorption of nutrients, resulting in excessive gas and changes in stool consistency and color. The foul odor you describe could be due to undigested food particles fermenting in the intestines.

3. Irritable Bowel Syndrome (IBS): This functional gastrointestinal disorder can cause symptoms such as bloating, gas, and changes in bowel habits. While IBS typically does not cause liquid discharge, it can lead to increased gas production and discomfort.

4. Bile Acid Diarrhea: If your body is not properly absorbing bile acids, it can lead to watery stools and increased gas. This condition can occur after gallbladder removal or in certain gastrointestinal disorders.

Given these possibilities, it is advisable to seek medical evaluation. Here are some reasons why you should consider visiting a healthcare provider:
- Persistent Symptoms: If the symptoms persist for more than a couple of days, or if they worsen, it's important to get evaluated. This is especially true if you experience additional symptoms such as fever, abdominal pain, or blood in your stool.

- Dehydration Risk: If you are experiencing significant liquid discharge, there is a risk of dehydration, especially if you are not able to maintain adequate fluid intake. Signs of dehydration include dry mouth, dizziness, and decreased urine output.

- Underlying Conditions: Some gastrointestinal issues can be indicative of more serious underlying conditions that require prompt treatment. Early diagnosis can lead to better outcomes.

When you visit a healthcare provider, they may perform a physical examination and possibly order tests such as blood work, stool tests, or imaging studies to determine the cause of your symptoms. They may also ask about your recent dietary habits, travel history, and any other symptoms you may have experienced.

In the meantime, here are some general recommendations:
- Stay Hydrated: Make sure to drink plenty of fluids, especially water, to prevent dehydration.

- Monitor Your Diet: Keep track of what you eat and how it affects your symptoms. Avoid foods that are known to cause gas, such as beans, carbonated drinks, and certain vegetables.

- Rest: Allow your body to recover by getting enough rest.

In conclusion, while it may be tempting to wait and see if the symptoms resolve on their own, given the unusual nature of your symptoms, it is prudent to seek medical advice. Early intervention can help identify any underlying issues and provide you with the appropriate treatment to alleviate your symptoms.

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