Is Diarrhea in babies and young children?

Diarrhea is a serious condition in very young people. It can cause severe dehydration in an infant in just one day.

Call your child’s doctor or seek emergency care if you see symptoms of dehydration, such as:

decreased urination
dry mouth
a headache
fatigue
a lack of tears when crying
dry skin
sunken eyes
sunken fontanel
sleepiness
irritability
Seek immediate treatment if any of the following apply to your child:

They’ve had diarrhea for 24 hours or more.
They have a fever of 102°F (39°C) or higher.
They have stools that contain blood.
They have stools that contain pus.
They have stools that are black and tarry.
These are all symptoms that indicate an emergency.