Review Highlights Infectious Diarrhea
The authors emphasize the importance of shared decision-making and reassessing goals of care.
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By
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Doug Brunk
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January 9, 2026
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Clinical Scorecard: Review Highlights Infectious Diarrhea
At a Glance
| Category | Detail |
|---|
| Condition | Infectious Diarrhea |
| Key Mechanisms | Viral or toxin-mediated causes, postinfectious inflammation, altered gut motility, bile acid malabsorption, microbiome disruption. |
| Target Population | Patients with acute, persistent, or chronic diarrhea. |
| Care Setting | Clinical settings, including outpatient and inpatient care. |
Key Highlights
- Supportive care is the cornerstone for acute diarrhea management.
- Multiplex gastrointestinal PCR panels can detect multiple pathogens but may not indicate active infection.
- Antibiotics are recommended only for severe bacterial diarrhea or high-risk patients.
- Persistent diarrhea may require symptom-directed therapies rather than repeated testing.
- Fidaxomicin is preferred over vancomycin for initial episodes of Clostridioides difficile infection.
Guideline-Based Recommendations
Diagnosis
- Selective diagnostic testing in acute diarrhea.
- Avoid unnecessary treatment based on PCR results that indicate colonization.
Management
- Use oral rehydration therapy and electrolyte replacement for acute diarrhea.
- Consider symptom-directed therapies for persistent diarrhea.
Monitoring & Follow-up
- Reassess goals of care and symptoms regularly.
- Evaluate for potential noninfectious causes in chronic cases.
Risks
- Antibiotic use can lead to adverse effects and antimicrobial resistance.
- Misinterpretation of diagnostic tests may lead to inappropriate treatment.
Patient & Prescribing Data
Patients experiencing various forms of diarrhea, including acute, persistent, and recurrent.
Microbiome-based strategies, such as fecal microbiota transplantation, are emerging for recurrent infections.
Clinical Best Practices
- Engage in shared decision-making with patients.
- Consider local resistance patterns when prescribing empiric antibiotics.
- Utilize multidisciplinary management for chronic diarrhea cases.
References
