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Severe dehydration in older children and adults

Severe dehydration means:

Your mouth and eyes may be extremely dry.
You may pass little or no urine for 12 or more hours.
You may not feel alert or be able to think clearly.
You may be too weak or dizzy to stand.
You may pass out.

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

By the time a person 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.

Current as of: October 24, 2023

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.