Diarrhea Management Guidelines

Initial Assessment and Diagnostic Approach

The American College of Physicians and the Infectious Diseases Society of America recommend obtaining a detailed history focusing on stool characteristics, frequency, duration, and associated symptoms, including fever, abdominal pain, and signs of volume depletion, in patients with diarrhea 1, 2
The Centers for Disease Control and Prevention suggest that diagnostic testing should be reserved for patients with severe dehydration, bloody stools, persistent fever, immunocompromised status, or symptoms lasting >7 days with no improvement 1, 2
Stool studies, including culture for bacterial pathogens and ova and parasites, should be performed if indicated by exposure history or clinical presentation 1, 2

The World Health Organization recommends the use of reduced osmolarity oral rehydration solution (ORS) as first-line therapy for all patients with mild to moderate dehydration from any cause of diarrhea 2
The American Academy of Pediatrics suggests that ORS should be continued until clinical dehydration is corrected, then maintained to replace ongoing losses 2
Dietary modifications, including the elimination of lactose-containing products and high-osmolar supplements, should be implemented immediately while maintaining adequate hydration 3, 4

The Infectious Diseases Society of America recommends that loperamide may be given to immunocompetent adults with acute watery diarrhea at an initial dose of 4 mg followed by 2 mg after each unformed stool, not exceeding 16 mg daily 2
The American College of Gastroenterology suggests that ondansetron may be given to children >4 years and adolescents with vomiting to facilitate oral rehydration tolerance 2
Octreotide may be considered for persistent diarrhea despite loperamide or severe grade 3-4 diarrhea, at a dose of 100-150 μg subcutaneously three times daily 3, 5

The Infectious Diseases Society of America recommends that empiric antibiotics should not be given routinely for acute watery diarrhea, but may be indicated for specific pathogens or severe inflammatory diarrhea in immunocompromised patients 1, 2
The Centers for Disease Control and Prevention suggest that antibiotics should be modified or discontinued once a clinically plausible organism is identified 2

The American College of Emergency Physicians recommends hospitalization or urgent referral for patients with severe dehydration, grade 3-4 diarrhea, signs of sepsis, or immunocompromised status with persistent symptoms 2, 3
The American Academy of Pediatrics suggests that antimotility agents should not be used in bloody or febrile diarrhea, and that loperamide should not be given to children <18 years due to the risk of respiratory depression and cardiac toxicity 2