411 REFERENCE · Wikibooks
Community Health Worker Manual/Diarrhea/Signs/Testing Skin Turgidity
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Pinch the skin on the child's stomach and time how long it takes to return to its normal position. If it comes back immediately, it indicates no dehydration. If it takes less than 2 seconds, it indicates some dehydration. If it takes longer than 2 seconds, this indicates severe dehydration.