What is a key indicator of heat-related illnesses?

A key indicator of heat-related illnesses is high body temperature and flushed skin. When the body is subjected to excessive heat, particularly in conditions with high humidity, it can no longer regulate its temperature effectively. The body temperature rises as a response to overheating, often leading to a flushed appearance due to increased blood flow to the skin's surface in an attempt to dissipate heat.

This symptom is crucial because it signals the body is struggling to maintain its core temperature, which can lead to more severe conditions such as heat exhaustion or heat stroke if not promptly addressed. Monitoring these symptoms is essential for recognizing the onset of heat-related illnesses, enabling timely intervention to prevent serious health risks.