[Acute infectious diarrhea in children]. / Diarreia aguda infecciosa na criança.

Diarrhoea is defined either clinically or pathophysiologically. Some epidemiological issues are considered in a global as well as in a national perspective. The main etiologies and pathophysiological mechanisms are referred. Some important natural defenses against intestinal infection are pointed out. Clinical manifestations are briefly described. The main therapeutical guidelines are discussed. Breast milk is referred to as one of the most important preventive measures against acute infectious diarrhoea.