What is a common symptom of dehydration?

A headache is indeed a common symptom of dehydration. When the body lacks sufficient fluids, this can lead to a decrease in blood volume, which may in turn reduce blood flow to the brain. This altered state can trigger pain receptors, resulting in headaches. Additionally, dehydration can lead to decreased electrolyte levels and changes in body chemistry that can also contribute to the sensation of pain in the head.

Understanding the signs of dehydration is crucial for lifeguards, as it can affect swimmers' performance and safety. Recognizing symptoms early allows for timely intervention, such as encouraging the intake of fluids.

Other symptoms listed, while they can indicate various health issues, are not typical indicators of dehydration. For instance, severe shivering may suggest hypothermia or another condition, redness of the skin can be linked to sunburn or allergic reactions, and difficulty in breathing may indicate respiratory problems. Being aware of the specific symptoms associated with dehydration helps ensure the welfare of individuals in and around the pool.