Which symptom indicates heat exhaustion?

Heat exhaustion is a heat-related illness that can occur after prolonged exposure to high temperatures, particularly when combined with high humidity and physical exertion. One of the primary symptoms of heat exhaustion is cool, clammy skin. This occurs as the body tries to regulate its temperature. When a person is experiencing heat exhaustion, they may sweat excessively, and the moisture on their skin can create a cool sensation, even though their core temperature might be elevated. This is the body’s attempt to cool down.

In contrast, high fever, dilated pupils, and chills are not typical indicators of heat exhaustion. High fever is more indicative of infections or other medical conditions. Dilated pupils can happen in various situations, such as during stress or certain medical emergencies, but are not specific to heat exhaustion. Chills usually suggest a reaction to cold temperatures or a fever rather than overheating. Understanding these symptoms is crucial for recognizing and addressing heat-related illnesses effectively.