Skip to main content

Evidence Based Strategies: Chronic Diarrhea in Pediatrics

Childhood diarrhea is a leading cause of morbidity and mortality worldwide and is associated with substantial health care utilization, including outpatient visits and hospitalizations, and subsequent socioeconomic burden.1,2 Although acute diarrhea typically has an infectious etiology, chronic or persistent diarrhea, defined as loose or watery stools persisting beyond 14 days, spans an etiologic spectrum from benign, self-limited conditions to more serious inflammatory and malabsorptive diseases.3,4 Due to the broad differential diagnosis, a stepwise, evidence-based evaluation for chronic diarrhea is essential to limit unnecessary testing and promptly identify serious disease requiring specialist consultation.

The general practitioner is often the first point of contact for these patients. When evaluating chronic diarrhea in a clinic visit, a thorough history and physical exam are critical to determine if further testing is warranted. Key historical elements include past medical conditions, stool characteristics, duration of symptoms, diet, medication history and infectious risk factors.4,5 Alarming features that should prompt additional evaluation include immunocompromised status, persistent diarrhea in infants under 1 year of age, presence of blood and mucus in the stool, nocturnal stooling waking patients from sleep, weight loss, or perianal lesions.5

Stool infectious testing is not routinely recommended for chronic diarrhea, especially if it has persisted for more than four weeks, unless there are clear infectious risk factors such as animal exposures, recent travel, exposure to contaminated water or food, or recent antibiotic use.5 Broad gastrointestinal pathogen panels are typically discouraged in immunocompetent patients because of their high cost and the potential for detecting clinically insignificant organisms, which can result in false-positive findings and unnecessary interventions.

When an infectious etiology is unlikely, patients can be stratified by the presence of blood in stool and their nutritional status. For patients with bloody diarrhea and/or inadequate weight gain, laboratory testing is recommended to screen for chronic inflammatory gastrointestinal conditions including celiac disease and inflammatory bowel disease. A referral to a pediatric gastroenterologist is recommended in these cases for further testing and management. For patients with non-bloody diarrhea and adequate weight gain, laboratory testing is not routinely recommended. These patients can often be managed with supportive care, dietary adjustments and reassurance.6

The Chronic Diarrhea Evidence Based Pathway was developed through multidisciplinary collaboration among specialists in Pediatric Gastroenterology, General Pediatrics, Hospital Medicine, Infectious Diseases and Laboratory Medicine. The pathway is intended to support clinicians in the evaluation of chronic diarrhea by providing guidance on initial assessment, appropriate diagnostic testing, management strategies and referral recommendations. If there is uncertainty with a patient’s presentation or clinical course, collaborating with a pediatric gastroenterologist is always recommended. This pathway can be accessed online below:

Chronic Diarrhea - Children's Mercy

References:

  1. Zhu HY, Xu F, Zhao WZ, Wang HX, Wang HG. The global burden of childhood diarrhea and its epidemiological characteristics from 1990 to 2021. Front Pediatr. 2025;13:1656234. doi:10.3389/fped.2025.1656234
  2. Cotter JM, Thomas J, Birkholz M, Ambroggio L, Holstein J, Dominguez SR. Clinical impact of a diagnostic gastrointestinal panel in children. Pediatrics. 2021;147(5):e2020036954. doi:10.1542/peds.2020-036954
  3. Giannattasio A, Guarino A, Lo Vecchio A. Management of children with prolonged diarrhea. F1000Res. 2016;5:F1000 Faculty Rev-206. doi:10.12688/f1000research.7469.1
  4. Zella GC, Israel EJ. Chronic diarrhea in children. Pediatr Rev. 2012;33(5):207-218. doi:10.1542/pir.33-5-207
  5. Shankar S, Rosenbaum J. Chronic diarrhoea in children: a practical algorithm-based approach. J Paediatr Child Health. 2020;56(7):1029-1038. doi:10.1111/jpc.14986
  6. Singh P, Lee A, Sheth NM, Chey WD. Chronic, noninfectious diarrhea: a review. JAMA. 2026;335(14):1250-1262. doi:10.1001/jama.2026.0872
The Link Menu