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Area of Science:

  • Gastroenterology
  • Internal Medicine

Background:

  • Chronic diarrhea affects up to 5% of the population.
  • Symptoms include loose stools, increased frequency, urgency, or incontinence.
  • Distinguishing chronic from acute diarrhea is based on symptom duration, typically over 4 weeks.

Purpose of the Study:

  • To outline the evaluation and diagnosis of chronic diarrhea.
  • To differentiate various causes of chronic diarrhea.
  • To guide appropriate diagnostic testing and therapeutic strategies.

Main Methods:

  • Clinical history and physical examination are primary tools.
  • Symptom clusters and patient history can suggest causes like diet, medications, or prior surgery/radiation.
  • Diagnostic testing includes blood work, stool analysis, endoscopy, imaging, histology, and physiological tests when indicated.
  • Rome criteria aid in distinguishing Irritable Bowel Syndrome (IBS).

Main Results:

  • History alone can identify causes like diet, medications, or surgery/radiation.
  • Testing is crucial when alarm features are present or the cause is unclear.
  • A tiered approach to testing can lead to more directed and rapid diagnosis.
  • Empiric antidiarrheal therapy can manage symptoms when specific treatments are unavailable.

Conclusions:

  • Chronic diarrhea requires a systematic evaluation.
  • History and physical examination are essential for initial assessment.
  • Judicious use of diagnostic tests, guided by clinical presentation and alarm features, is key for accurate diagnosis and management.