Dehydration

Definition

Dehydration means your body does not have as much water and fluids as it should. Dehydration can be caused by losing too much fluid, not drinking enough water or fluids, or both. Vomiting and diarrhea are common causes.

Infants and children are more susceptible to dehydration than adults because of their smaller body weights and higher turnover of water and electrolytes. The elderly and those with illnesses are also at higher risk.

Dehydration is classified as mild, moderate, or severe based on how much of the body's fluid is lost or not replenished. When severe, dehydration is a life-threatening emergency.

Symptoms

• Dry or sticky mouth
• Low or no urine output; concentrated urine appears dark yellow
• Not producing tears
• Sunken eyes
• Markedly sunken fontanelles (the soft spot on the top of the head) in an infant
• Lethargic or comatose (with severe dehydration)

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