Managing paediatric diarrhoea involves rehydration with ORS, electrolyte maintenance via potassium-rich foods like bananas, and probiotic use to restore gut flora. Avoid hyperosmolar fluids and lactose-containing products. Persistent diarrhoea beyond 48–72 hours or signs of dehydration warrant paediatric evaluation to prevent complications such as acidosis, weight loss, or failure to thrive.