How to distinguish heat stroke from heat exhaustion and initial management?

• A. Heat exhaustion is milder with fatigue and dehydration; treat with rest and fluids
• B. Heat stroke features altered mental status and potential hyperthermia; require rapid cooling and transport; heat exhaustion is milder with fatigue and dehydration; treat with rest and fluids
• C. There is no difference between heat stroke and heat exhaustion
• D. Heat stroke presents with sweating and calm behavior

Answer: (B)

The main idea is recognizing two different heat-related illnesses by how the body’s brain and temperature are affected, and matching the treatment to how severe the condition is. Heat stroke is a true medical emergency because the body temperature climbs very high (usually over 40°C) and the brain is affected, leading to altered mental status such as confusion, agitation, seizures, or even coma. Because the brain is involved, you act fast to cool the person and get them to hospital: start rapid cooling right away (evaporative cooling with mist and fans or cold-water immersion if feasible) and arrange urgent transport. While you’re doing that, monitor breathing and circulation and keep the person safe.

Heat exhaustion, on the other hand, is milder. It presents with symptoms like fatigue, dehydration, dizziness, nausea, and sometimes muscle cramps, with the skin often still moist. Management focuses on removing heat stress and giving fluids if the person can safely drink, along with rest and monitoring for any worsening.

That distinction matters because the most effective actions differ: extreme hyperthermia with mental status changes demands rapid cooling and emergency care, whereas milder fatigue and dehydration from heat exposure are managed with rest and fluids. The other descriptions don’t consistently capture this difference and can misstate the signs or the urgency.