Diarrhoea is any attack of frequent, watery stools. Diarrhoea can be triggered by many different conditions. Acute diarrhoea is often caused by an infection and may require medical management. The primary role of nutrition in acute diarrhoea is to prevent depletion of fluid, sodium, potassium, and calories. Replenishment of all four has been achieved with �rehydration solutions� and with a variety of foods, from salted carrot soup to peeled scraped apple to rice gruel.