Which symptom is commonly associated with heat exhaustion?

Heat exhaustion is a heat-related illness that occurs due to prolonged exposure to high temperatures, often combined with dehydration. One of the common symptoms of heat exhaustion is a headache. This symptom typically arises as the body struggles to regulate its temperature and maintain proper hydration levels. As the body overheats and fluids are lost through sweating, it can lead to a drop in blood volume, which in turn can cause pain in the head and a sense of pressure or discomfort.

The presence of a headache in heat exhaustion serves as a warning sign that the body is experiencing significant stress due to high temperatures and potential dehydration, making it crucial to recognize early and take action to cool down and rehydrate. Other symptoms of heat exhaustion often include heavy sweating, weakness, dizziness, and fainting, which reflect the body's struggle to cope with the heat, but the headache is a particularly notable and common indicator.