Why can severe diarrhea be dangerous for infants and children?

Severe diarrhea is dangerous for infants and children primarily because it leads to rapid and extreme dehydration. When a child experiences frequent, watery stools—often accompanied by vomiting—the body loses essential fluids and minerals at a rate that can quickly become life-threatening if not replaced.12

In infants and young children, this fluid loss can cause:
* Physical decline: Symptoms such as lethargy, weakness, and listlessness.12
* Severe complications: In extreme cases, children may experience fever and seizures due to the severity of the dehydration.1
* Risk of mortality: If the lost fluids and salts are not replenished, the condition can lead to death.12

The primary treatment for these digestive system diseases, such as those caused by rotavirus or cholera, is rehydration. This is typically achieved through the administration of oral rehydration salts (ORS) or, in the most severe cases, intravenous fluids to restore the body's balance.12