By the time a child becomes severely dehydrated, there is no longer enough fluid in the body to carry enough blood to vital organs. Shock, which is a life-threatening condition, can develop quickly.

A severely dehydrated child may not be able to cooperate or communicate.

Symptoms of severe dehydration in a young child may include:

• A lack of interest in playing.
• Extreme sleepiness. The child may be so sleepy that he or she is difficult to wake up.
• A dry mouth and tongue. Your child's tongue may look parched or cracked.
• A sunken soft spot (fontanel) on top of the head.
• Sunken eyes without tears.
• Fast breathing and rapid heartbeat.
• No urination for more than 12 hours.

Severe dehydration is a medical emergency. Call 911 or other emergency services immediately.