Diarrhea in Primary Care Adults Testing Algorithm

Diarrhea may be infectious or noninfectious and presents with acute (<14 days) or persistent (>14 days) symptoms. In most healthy adults, no stool testing is indicated because diarrheas are generally self-limiting. In cases of advanced age, certain comorbidities, or bloody stools, Clostridium difficile, parasite, or bacterial testing should be considered.

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