How to Tackle Diarrhea in Children?

According to the most recent scientific evidence, viral infections constitute the predominant trigger for diarrheal episodes in infants and preschool-aged children, with rotaviruses playing a pivotal role—accounting for 35 to 50 percent of acute gastroenteritis cases. Less frequently, though still significantly, bacterial infections (including *Salmonella* and *Campylobacter* strains) and the effects of microbial toxins are recognized as etiological factors. Pathogen transmission occurs primarily via droplet spread—either through direct contact with infected individuals or the ingestion of contaminated food products. Meanwhile, infections caused by protozoa (e.g., *Cryptosporidium parvum*, *Giardia lamblia*) and intestinal parasites (such as *Entamoeba histolytica*) represent a less common yet clinically relevant cause, particularly in patients with compromised immune function [1].

Frequent watery or semi-formed stools, accompanied by vomiting or fever, often leave parents uncertain about the most effective course of action to alleviate their child’s discomfort and prevent complications. **The foremost priority** is **immediate rehydration** using **oral glucose-electrolyte solutions with reduced osmolarity** (refer to Table 1), widely available in pharmacies in various flavors. **Chilled, fruit-flavored fluids** are preferred over warm beverages, as the latter may **trigger nausea**. **Avoid fruit juices, carbonated drinks, or cola** due to their **high osmotic load**, which can exacerbate diarrhea and prolong its duration. For **mild to moderate dehydration**, a **4-hour fasting period** followed by **4–6 hours of aggressive fluid replacement** is advised. Children may **drink ad libitum** unless signs of overhydration emerge. **Daily fluid requirements** are calculated as follows: **100 mL/kg for weights 1–10 kg**; **1000 mL + 50 mL/kg for 10–20 kg**; **1500 mL + 20 mL/kg above 20 kg**. After each **loose bowel movement**, **infants (<2 years)** should receive an additional **50–100 mL**, while **older children (2–10 years)** require **100–200 mL** of fluid. Given the **predominantly viral etiology**, **routine microbiological stool cultures are not warranted**.

The foremost priority in managing pediatric diarrhea is the prevention of dehydration while ensuring adequate nutritional intake. The gold standard for treating acute diarrhea in children remains home-based oral rehydration therapy (ORT) using specialized oral rehydration solutions (DPN), which are readily available over the counter at pharmacies. In addition to these formulated solutions, infants fed with formula milk and older children may also be given commonly accessible fluids, including boiled water, fennel tea, weakly brewed black tea, lightly salted broths, and plain yogurt. The incorporation of evidence-based probiotic strains—particularly *Lactobacillus rhamnosus* GG (e.g., Dicoflor) and *Saccharomyces boulardii* (e.g., Enterol)—may facilitate intestinal microbiota recovery; however, it is critical to emphasize that probiotics serve solely as adjunctive therapy and must not replace oral rehydration [1]. Avoid implementing fasting periods! Breastfed infants should continue nursing throughout the diarrheal episode (except in cases of severe dehydration). For formula-fed infants, standard-concentration milk should be administered every three hours (with the exception of mild-to-moderate dehydration, where a four-hour exclusive DPN phase is mandated). Alterations to formula composition—such as dilution or substitution with soy-based or hydrolyzed formulas—lack clinical justification. Older children should receive frequent (6–7 times daily), small, easily digestible meals, such as blackcurrant jelly, rice with apples, banana or apple purée, mashed potatoes or pumpkin, and vegetable creams. Early resumption of feeding during diarrhea shortens symptom duration, prevents nutritional deficiencies, and promotes intestinal epithelial repair. Strict adherence to hygiene protocols during meal preparation is essential. Parents must vigilantly monitor for dehydration indicators, which include weight loss, prolonged capillary refill time (normal: <1.5–2 seconds), reduced skin turgor, and abnormal breathing patterns due to metabolic acidosis. If symptoms persist or worsen, immediate medical consultation is required. Diarrhea remains a leading cause of pediatric hospitalization, particularly in children under three years of age. Although most cases are mild and resolve within 3–5 days, symptoms should never be dismissed; prompt initiation of home-based management is crucial. For infants under three months, any diarrheal episode necessitates urgent medical evaluation.