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Acute diarrhea — Clinical Guidelines

Overview

Acute diarrhea is characterized by increased stool frequency and looseness, often caused by infectious agents, but can also result from non-infectious factors such as medications, dietary changes, and environmental conditions 1 2 6 15.

Diagnosis

Clinical Assessment: Evaluate stool frequency, consistency, and presence of blood or mucus 4.

Laboratory Tests: Stool cultures for pathogens, electrolyte levels, and blood tests to rule out systemic infections 4 16.

Specific Tests: Consider rotavirus antigen testing in children <5 years old 4.

Environmental Factors: Assess water quality and sanitation practices, especially in resource-limited settings 1 9.

Management

Rehydration: Oral rehydration solutions (ORS) for mild to moderate dehydration; intravenous fluids for severe dehydration 4 15.

Diet: Early reintroduction of a normal diet; continue breastfeeding in infants 4.

Antidiarrheal Agents: Loperamide for symptomatic relief in acute infectious diarrhea (starting dose 4 mg, then 2 mg after each loose stool) 4 24.

Probiotics: Consider use in acute infectious diarrhea, though practice varies widely 13.

Antibiotics: Reserved for specific bacterial causes (e.g., shigellosis, cholera) 4.

Special Populations

Pediatrics: Focus on ORS and early feeding; rotavirus vaccination recommended where available 4 11.

Elderly: Increased risk of complications; careful monitoring for dehydration and electrolyte imbalances 4.

Comorbidities: Consider underlying conditions (e.g., HIV) that may affect management and prognosis 17.

Key Recommendations

Rehydration Therapy: Prioritize ORS for rehydration in acute diarrhea (Evidence: Strong 4).

Early Diet Resumption: Encourage continuation of normal diet, especially in children, to promote recovery (Evidence: Moderate 4).

Use of Loperamide: Consider loperamide for symptomatic relief in acute infectious diarrhea, particularly in adults (Evidence: Moderate 4 24).

Probiotic Use: Evaluate the use of probiotics in pediatric acute infectious diarrhea, though evidence varies (Evidence: Weak 13).

Targeted Antibiotic Therapy: Reserve antibiotics for confirmed bacterial infections like shigellosis or cholera (Evidence: Moderate 4).

Sanitation and Hygiene: Improve water supply and hygiene practices to reduce incidence, especially in vulnerable populations (Evidence: Moderate 1 9).

References

1 Niven CG, Clark B, Floess E, Chirwa B, Matekenya M, Budden E et al.. Associations between Water Supply Interruptions and Water Use, Drinking Water Quality, Child Health, and Caregiver Stress in Peri-Urban Malawi. Environmental science & technology 2026. link 2 Colston JM, Fang B, Houpt E, Chernyavskiy P, Swarup S, Gardner LM et al.. The Planetary Child Health & Enterics Observatory (Plan-EO): A protocol for an interdisciplinary research initiative and web-based dashboard for mapping enteric infectious diseases and their risk factors and interventions in LMICs. PloS one 2024. link 3 Kananura RM, Waiswa P, Wasswa R, Boerma T, Blumenberg C, Maiga A. Deprivation and Its Association with Child Health and Nutrition in the Greater Kampala Metropolitan Area of Uganda. Journal of urban health : bulletin of the New York Academy of Medicine 2024. link 4 Khan L. Diarrhea in Resource-Rich Countries: Common and Uncommon Causes. Pediatric annals 2022. link 5 Niyibitegeka F, Riewpaiboon A, Youngkong S, Thavorncharoensap M. Economic burden of childhood diarrhea in Burundi. Global health research and policy 2021. link 6 Epstein A, Benmarhnia T, Weiser SD. Drought and Illness among Young Children in Uganda, 2009-2012. The American journal of tropical medicine and hygiene 2020. link 7 Carrasco-Labra A, Lytvyn L, Falck-Ytter Y, Surawicz CM, Chey WD. AGA Technical Review on the Evaluation of Functional Diarrhea and Diarrhea-Predominant Irritable Bowel Syndrome in Adults (IBS-D). Gastroenterology 2019. link 8 Torondel B, Khan R, Holm Larsen T, White S. Efficacy of the SuperTowel. The American journal of tropical medicine and hygiene 2019. link 9 Lopez VK, West BT, Clarke PJ, Quentin E, Eisenberg JNS. Latent variable modeling to develop a robust proxy for sensitive behaviors: application to latrine use behavior and its association with sanitation access in a middle-income country. BMC public health 2019. link 10 Senderovich H, Vierhout MJ. Is there a role for charcoal in palliative diarrhea management?. Current medical research and opinion 2018. link 11 Bucak IH, Ozturk AB, Almis H, Cevik MÖ, Tekin M, Konca Ç et al.. Is there a relationship between low vitamin D and rotaviral diarrhea?. Pediatrics international : official journal of the Japan Pediatric Society 2016. link 12 Rocha HA, Silva AC, Correia LL, Campos JS, Machado MM, Leite ÁJ et al.. Effects of Vitamin A supplementation on child morbidity: a twenty-year time series analysis in the northeastern region of Brazil. Maternal and child health journal 2015. link 13 Weizman Z. Probiotics use in childhood acute diarrhea: a web-based survey. Journal of clinical gastroenterology 2011. link 14 Norouzian MA, Valizadeh R, Khadem AA, Afzalzadeh A, Nabipour A. The effects of feeding clinoptilolite on hematology, performance, and health of newborn lambs. Biological trace element research 2010. link 15 Singh E, Redfield D. Prophylaxis for travelers' diarrhea. Current gastroenterology reports 2009. link 16 Liu YW, Suzuki S, Kashima M, Tokado H, Fukuzaki K, Miyajima H. Clinical pathology data from cynomolgus monkeys from China in which diarrhea was observed during quarantine. Experimental animals 2008. link 17 Kassu A, Andualem B, Van Nhien N, Nakamori M, Nishikawa T, Yamamoto S et al.. Vitamin A deficiency in patients with diarrhea and HIV infection in Ethiopia. Asia Pacific journal of clinical nutrition 2007. link 18 Armon K, MacFaul R, Hemingway P, Werneke U, Stephenson T. The impact of presenting problem based guidelines for children with medical problems in an accident and emergency department. Archives of disease in childhood 2004. link 19 Diemert DJ. Prevention and self-treatment of travelers' diarrhea. Primary care 2002. link00034-9) 20 Oliveira RB, Baffa O, Troncon LE, Miranda JR, Cambrea CR. Evaluation of a biomagnetic technique for measurement of orocaecal transit time. European journal of gastroenterology & hepatology 1996. link 21 Iyer V, Holmes JW, Richardson RL. Intractable diarrhea from carbamazepine. Epilepsia 1992. link 22 Borriello SP, Barclay FE, Welch AR, Stringer MF, Watson GN, Williams RK et al.. Epidemiology of diarrhoea caused by enterotoxigenic Clostridium perfringens. Journal of medical microbiology 1985. link 23 Charles R, Turner WL. Diarrhoea induced by migration of a pacemaker generator. British heart journal 1978. link 24 Martins JK, Roedl G. The control of acute diarrhea in a large industrial plant. Journal of occupational medicine. : official publication of the Industrial Medical Association 1978. link 25 Friedman GD, Gerard MJ, Ury HK. Clindamycin and diarrhea. JAMA 1976. link

Acute diarrhea