How can you differentiate heat exhaustion from heat stroke in terms of mental status and skin condition?

• A. Heat exhaustion: alert/normal mental status with moist, pale or sweaty skin
• B. Heat exhaustion: altered mental status with hot dry skin
• C. Heat stroke: alert/normal mental status with moist skin
• D. Heat stroke: normal mental status with cold, dry skin

Answer: (A)

The key idea is that mental status and skin moisture help distinguish heat exhaustion from heat stroke. In heat exhaustion, the person usually remains alert with a normal mental state, and the skin is moist due to ongoing sweating. This indicates the body's cooling mechanism is still functioning and CNS is not yet impaired. In heat stroke, there is CNS involvement—confusion, agitation, or other altered mental status—and sweating may stop, leaving the skin hot and dry. So the best description is someone who is alert with moist skin, pointing to heat exhaustion. The other descriptions align more with heat stroke or other conditions (altered mental status with hot, dry skin, or normal mental status with cold, dry skin), which don’t fit heat exhaustion.