She's malnourished and dehydrated, Wynn said.
Along with the water loss, the body is denied glucose and other nutrients, leaving it a little malnourished.
Children who are malnourished or have weakened immune systems may be severely affected and death can result.
Underweight, malnourished teenagers (such as those with an eating disorder) have an increased risk of osteoporosis and may not have menstrual periods.
Restricting lactose (milk and milk products) is usually not necessary but may be helpful in a child with a severe intestinal disease or diarrhea in a malnourished child.