Which symptom is most commonly associated with dehydration in infants?

Crying without tears is the symptom most commonly associated with dehydration in infants. This lack of tears occurs when a child is not sufficiently hydrated, as the body conserves water and production of tears diminishes. In infants, this can be an early sign of dehydration, raising concern for caregivers and prompting the need for hydration assessment and intervention.

Increased salivation is typically not indicative of dehydration; rather, it can be associated with teething or other oral issues. Frequent bowel movements may suggest gastrointestinal distress or infections, but they are not a direct symptom of dehydration. A swollen abdomen may indicate other medical conditions that are unrelated to hydration status. Therefore, recognizing the absence of tears when an infant cries is crucial for identifying dehydration early and ensuring appropriate treatment is implemented.