Diarrhea in Children: An Introduction
Diarrhea is defined as loose, watery, unformed stools occurring more than three times in one day. The term "diarrhea" does not refer to the occasional loose stool or the frequent passing of formed stools.
Diarrhea is one of the most common ailments seen in infants (
see Infant Diarrhea), children, and adults.
Causes of Diarrhea in Children
One of the most common causes of diarrhea in children is the
stomach flu (known medically as viral gastroenteritis). Many different viruses can cause
stomach flu in children. The most common types include:
Infection with the rotavirus is the most common cause of acute diarrhea in children. In the United States, rotavirus is responsible for approximately 5 to 10 percent of all cases of diarrhea among children under five years of age. However, because rotavirus causes more severe diarrhea than other pathogens, it accounts for a greater proportion of severe diarrhea cases (for example, 40 to 50 percent of diarrhea hospitalizations).
Rotavirus accounts for more than 500,000 physician visits and approximately 55,000 to 70,000 hospitalizations each year among children under five years of age. An estimated 1 in 200,000 children with rotavirus diarrhea die from the complications of the infection.