What is a key symptom of heat stroke?

A key symptom of heat stroke is actually represented by heavy sweating or dry skin, depending on the stage of heat-related illness. In cases of heat exhaustion, heavy sweating is prominent, but during heat stroke, the body's thermoregulation fails, and the individual may stop sweating altogether, leading to dry and hot skin.

Headache can occur with various conditions, but in the context of heat stroke, it is not the most defining symptom. Clammy skin is more characteristic of heat exhaustion rather than heat stroke, and cold, pale skin also indicates a different medical issue like shock or hypothermia.

Identifying heat stroke is critical for treatment, as it can be life-threatening. Symptoms include high body temperature, altered mental state, hot dry skin, and often, a lack of sweating. Recognizing these signs ensures prompt and effective intervention.