What are the signs of heat exhaustion?

Heat exhaustion is a condition characterized by the body's overheating, often due to prolonged exposure to high temperatures or strenuous physical activity. The signs of heat exhaustion include heavy sweating, weakness, dizziness, and nausea, which are indicative of the body’s struggle to cool down properly.

Heavy sweating occurs as a response to elevated body temperatures in an effort to dissipate heat. Weakness and dizziness can result from loss of fluids and electrolytes, while nausea may occur as a physiological response to the stress on the body. Recognizing these symptoms early is crucial for prompt intervention, which might include moving the individual to a cooler environment, hydration, and rest to prevent progression to more severe heat-related illnesses.

The other options describe symptoms associated with different medical conditions that are not indicative of heat exhaustion, emphasizing the importance of accurately identifying the signs specific to this condition for effective first aid response.