Foul-Smelling Stool: Causes and When to Seek Help - Gastroenterology and Hepatology

Q: Foul-Smelling Stool: Causes and When to Seek Help

Hello： Based on the symptoms, it appears to be a disruption in gastrointestinal digestion and absorption following a bout of gastroenteritis. <br>It is recommended to consult a gastroenterologist to determine if further examinations are necessary. <br>In terms of diet, it is advi

Foul-smelling stool?

Hello doctor, about two years ago I had gastroenteritis, and after taking medication, I recovered.
However, since then, my stools have become very foul-smelling, and they feel like they contain a lot of air.
Upon observation, I can even see bubbles rising from them.
My stomach often makes gurgling sounds, as if there is a lot of gas.
Recently, during the time I was preparing for exams, I sometimes experienced diarrhea, while at other times I did not.
I researched the symptoms of colorectal cancer online and found some that match, but others do not.
I usually eat the same food as my family and rarely buy or eat anything on my own, and there is no family history of illness.
My recent condition is that I used to go to the bathroom every two days, but now it has changed to once a day, although the amount is smaller.
As long as I am not facing midterm or final exams, I rarely have diarrhea, but my stools are still very foul-smelling and contain a lot of gas.
If I really need to get checked, what tests should I start with? What are the approximate costs? My family does not have extra money, and this situation is making me very anxious.

TAXI, 10~19 year old female. Ask Date: 2012/02/27

Dr. Chen Qifeng reply Gastroenterology and Hepatology

Hello: Based on the symptoms, it appears to be a disruption in gastrointestinal digestion and absorption following a bout of gastroenteritis.
It is recommended to consult a gastroenterologist to determine if further examinations are necessary.
In terms of diet, it is advisable to consume low-fat and low-dairy foods, focusing on light and mild options.
Wishing you good health.
Sincerely, Dr.
Chen Chih-Feng, Taoyuan General Hospital, Department of Health.

Reply Date: 2012/02/27

More Info

Dear Patient,
Thank you for reaching out with your concerns regarding your gastrointestinal symptoms. It sounds like you have been experiencing some distressing changes in your bowel habits, particularly foul-smelling stools, increased gas, and occasional diarrhea. Let's break down these symptoms and discuss potential causes, as well as when you should seek medical help.

Understanding Foul-Smelling Stool:
Foul-smelling stools can arise from various factors, including dietary choices, infections, malabsorption syndromes, and gastrointestinal disorders. Given your history of gastroenteritis two years ago, it’s possible that your digestive system has not fully returned to its baseline function. Here are some common causes of foul-smelling stools:
1. Dietary Factors: Certain foods can lead to foul-smelling stools, particularly those high in sulfur (like broccoli, cauliflower, and eggs) or those that are difficult to digest (like fatty foods). If you have recently changed your diet or are consuming more processed foods, this could contribute to the odor.

2. Malabsorption: Conditions such as celiac disease, lactose intolerance, or pancreatic insufficiency can lead to malabsorption of nutrients, resulting in foul-smelling, greasy stools that may float due to excess gas. If your body is not absorbing nutrients properly, it can lead to increased gas production and changes in stool consistency.

3. Infections: Gastrointestinal infections can cause changes in stool odor and consistency. If you had an infection two years ago, it’s possible that lingering effects could be contributing to your current symptoms.

4. Bacterial Overgrowth: An imbalance in gut bacteria can lead to excessive gas production and changes in stool odor. This condition, known as small intestinal bacterial overgrowth (SIBO), can occur after infections or antibiotic use.

5. Inflammatory Bowel Disease (IBD): Conditions like Crohn's disease or ulcerative colitis can also lead to changes in bowel habits and stool characteristics. These conditions often present with additional symptoms such as abdominal pain, weight loss, or blood in the stool.

When to Seek Help:
Given your symptoms, it is important to consult a healthcare professional, especially if you experience any of the following:
- Persistent diarrhea or changes in bowel habits lasting more than a few weeks.

- Severe abdominal pain or cramping.

- Unexplained weight loss.

- Blood in your stool or black, tarry stools.

- Symptoms of dehydration (such as dizziness, dry mouth, or decreased urination).

Initial Steps for Evaluation:
When you see a healthcare provider, they may recommend several tests to determine the underlying cause of your symptoms. These could include:
1. Stool Tests: To check for infections, blood, or signs of malabsorption.

2. Blood Tests: To assess for anemia, inflammation, or signs of infection.

3. Imaging Studies: Such as an abdominal ultrasound or CT scan, if necessary.

4. Endoscopy: In some cases, a gastroenterologist may recommend a colonoscopy or upper endoscopy to visualize the gastrointestinal tract.

Cost Considerations:
The cost of these tests can vary widely depending on your location, healthcare provider, and whether you have insurance. It’s advisable to discuss your financial concerns with your healthcare provider, as they may be able to offer lower-cost options or payment plans. Many clinics also have financial assistance programs for patients in need.

In conclusion, while foul-smelling stools and increased gas can be concerning, they are often manageable with the right medical guidance. I encourage you to seek medical attention to address your symptoms and alleviate your worries. Early intervention can lead to better outcomes and improved quality of life.

Best wishes for your health,
Doctor Q&A Teams

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