What symptom might indicate that a person is dehydrated?

Poor skin turgor is a classic indication of dehydration. When the body loses fluid, the skin's elasticity decreases, leading to a reduced ability to return to its normal position after being pinched or pulled. This is particularly noticeable in areas where the skin is more prone to lose moisture, such as on the back of the hand or the abdomen. Healthcare providers often assess skin turgor by gently pinching the skin; if it takes longer than usual to smooth out, this can suggest that the person may not be adequately hydrated.

The other symptoms listed do not typically align with dehydration. Frequent urination usually suggests adequate fluid intake or may indicate other medical conditions rather than dehydration. Swelling in extremities can result from fluid retention or other issues, not dehydration. Increased appetite is generally not associated with a lack of fluids and may reflect different nutritional needs or psychological factors. Thus, poor skin turgor is a direct and observable symptom that effectively signals potential dehydration.