Which of the following is a common symptom of dehydration?

Dry skin is indeed a common symptom of dehydration. When the body lacks adequate fluids, one of the first areas to show signs of this condition is the skin. Proper hydration is essential for maintaining the skin's moisture levels and elasticity. When dehydrated, the skin can become less pliable and may appear flaky or rough due to insufficient water content. This physical change is a direct result of the body's efforts to conserve water and maintain vital functions, which can affect the skin's overall appearance.

In contexts like this, other symptoms can manifest differently. For instance, excessive sweating often implies high fluid loss, but it can also indicate that the body is trying to cool itself down; thus, it may not directly suggest dehydration. Frequent urination typically indicates adequate hydration or perhaps conditions like diabetes, while increased appetite is not a typical symptom of dehydration. Instead, those experiencing dehydration often feel reduced appetite or even nausea as the body's focus shifts to conserving energy and hydration.