Persistent Diarrhea: Prolonged Gastroenteritis Symptoms - Gastroenterology and Hepatology

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Diarrhea with watery stools will not improve?


Hello, Doctor.
About a month ago, I experienced symptoms of gastroenteritis.
Typically, my first bowel movement in the morning (around 8 or 9 AM) is somewhat loose, and then about four to five hours later, I have two to three episodes of watery stools.
Usually, after having breakfast and lunch, I feel abdominal pain and the urge to have a bowel movement, which results in watery stools.
However, this does not happen after dinner.
I have visited the clinic four times to see a doctor and received medication for gastroenteritis.
The medication has provided some relief, but if I stop taking it, the watery stool symptoms return within a couple of days.
This cycle continues without any fever, and the stool color appears normal without blood.
Occasionally, I experience a slight headache.
What could be the possible cause? Can gastroenteritis last this long? Should I go to the hospital for further examination? Thank you.

Leo, 40~49 year old female. Ask Date: 2021/11/12

Dr. Chen Shidian reply Gastroenterology and Hepatology


You may seek medical treatment again and follow a light diet.

Reply Date: 2021/11/12

More Info


Persistent diarrhea can be a frustrating and concerning symptom, especially when it lingers for an extended period. Based on your description, it seems that you have been experiencing gastrointestinal issues for about a month, characterized by watery stools, particularly after meals, and some abdominal discomfort. While you have sought treatment for gastroenteritis, the recurrence of symptoms upon discontinuation of medication suggests that there may be underlying factors that need to be addressed.

Gastroenteritis, often caused by viral or bacterial infections, typically resolves within a few days to a week. However, in some cases, symptoms can persist due to several reasons, including:
1. Post-Infectious Irritable Bowel Syndrome (IBS): After an episode of gastroenteritis, some individuals develop IBS, which can lead to ongoing symptoms like diarrhea, abdominal pain, and changes in bowel habits. This condition can be triggered by the initial infection and may require dietary adjustments and specific treatments to manage.

2. Food Intolerances or Allergies: Sometimes, the gastrointestinal tract can become more sensitive after an infection, leading to intolerances to certain foods. Common culprits include lactose, gluten, and high-fiber foods. Keeping a food diary may help identify any correlations between your diet and symptoms.

3. Antibiotic-Associated Diarrhea: If you have been prescribed antibiotics during your treatment, it could disrupt the normal gut flora, leading to diarrhea. This can sometimes result in a condition called Clostridium difficile infection, which requires specific treatment.

4. Chronic Infections or Inflammatory Conditions: In some cases, persistent diarrhea may be due to chronic infections (like parasitic infections) or inflammatory bowel diseases (IBD) such as Crohn's disease or ulcerative colitis. These conditions can cause ongoing gastrointestinal symptoms and may require more extensive evaluation.

5. Stress and Anxiety: Psychological factors can also play a significant role in gastrointestinal health. Stress and anxiety can exacerbate symptoms and lead to a cycle of discomfort and bowel irregularities.

Given that your symptoms have persisted for a month and are affecting your daily life, it is advisable to seek further evaluation from a healthcare professional. A gastroenterologist can perform a thorough assessment, which may include:
- Stool Tests: To check for infections, parasites, or signs of inflammation.

- Blood Tests: To assess for any underlying conditions or deficiencies.

- Imaging Studies: Such as an abdominal ultrasound or CT scan, if indicated.

- Endoscopy: In some cases, a colonoscopy may be warranted to visualize the colon and obtain biopsies if necessary.

In the meantime, consider the following management strategies:
- Hydration: Ensure you are drinking plenty of fluids to prevent dehydration, especially if you are experiencing diarrhea.

- Dietary Modifications: A bland diet may help. Avoid high-fat, spicy, or sugary foods that can exacerbate symptoms. Gradually reintroduce foods to identify any triggers.

- Probiotics: These can help restore the balance of gut bacteria and may be beneficial, especially after antibiotic use.

- Stress Management: Techniques such as mindfulness, yoga, or counseling may help alleviate stress-related symptoms.

In conclusion, while gastroenteritis can lead to prolonged symptoms, it is essential to investigate further if symptoms persist. A comprehensive evaluation will help determine the underlying cause and guide appropriate treatment to restore your gastrointestinal health.

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