What is dehydration primarily characterized by?

Dehydration is primarily characterized by fluid loss that exceeds fluid intake. This condition occurs when the body does not have enough water to carry out its normal functions, which can lead to various physiological issues. The body relies on a precise balance of fluids to maintain cellular function, regulate temperature, and transport nutrients. When there is a deficit in fluid intake or an excessive loss of fluids—whether through sweating, urination, diarrhea, or vomiting—this imbalance manifests as dehydration.

The consequence of this fluid deficit can vary from mild to severe, affecting organs and body systems. In any context—whether in the elderly, infants, or those with certain medical conditions—it's critical for caregivers to recognize the signs of dehydration and act promptly to restore fluid balance.