Which of the following is a common sign of excessive heat exposure?

A common sign of excessive heat exposure includes headache and dizziness. These symptoms often occur as the body struggles to regulate its temperature in extreme heat. When someone is exposed to high temperatures for prolonged periods, they may experience dehydration and a decrease in blood flow to the brain, leading to feelings of dizziness or lightheadedness. Additionally, headaches can result from dehydration, heat exhaustion, or heat stroke, which can occur when the body is unable to cool itself. Recognizing these symptoms is crucial for addressing heat-related illnesses promptly and effectively, making it essential for responders and firefighters to identify them in themselves or others during operations in hot conditions.

In contrast, excessive heat exposure typically does not manifest through increased urination, as the body tends to retain fluids to cope with dehydration. Cool, clammy skin is more commonly associated with heat exhaustion, which can be a sign of the body's mechanisms to cool off but doesn't indicate excessive heat exposure specifically. Rapid healing of wounds is unrelated to heat exposure and indicates a healthy immune response rather than a symptom of heat-related issues.