What is a common symptom of dehydration?

A common symptom of dehydration is dry mucous membranes. When the body is dehydrated, it lacks the necessary fluids to maintain normal bodily functions, which can lead to various signs. The mucous membranes, found in areas such as the mouth and nasal passages, rely on adequate hydration to remain moist. When fluid levels drop, these membranes become dry and brittle, making this a clear indicator of dehydration.

Increased urine output, while indicative of other conditions or excessive fluid intake, does not align with dehydration, as the body typically decreases urine output in an attempt to conserve water during dehydration. Swollen ankles are generally associated with fluid retention or various health issues, rather than dehydration. Bradycardia, or a slow heart rate, is not a direct symptom of dehydration and can arise from a multitude of other factors such as medications or underlying health conditions.