Which is NOT one of the three heat-related illnesses?

• A. Heat stroke
• B. Heat cramps
• C. Heat exhaustion
• D. Heat rash

Answer: (D)

Distinguishing major heat-related illnesses from milder heat-related skin conditions. The three major heat-related illnesses are heat stroke, heat exhaustion, and heat cramps. Heat stroke is a medical emergency with a very high body temperature and altered mental status; heat exhaustion involves heavy sweating, weakness, and dizziness; heat cramps are painful muscle spasms from electrolyte loss due to sweating. Heat rash, sometimes called prickly heat, is a skin irritation caused by blocked sweat ducts in hot, humid conditions. It shows up as a red, itchy or prickly rash on the skin but doesn’t involve the body's core temperature or systemic symptoms. Because it is a localized skin issue rather than a systemic overheating problem, it’s not counted among the three heat-related illnesses. Treat heat rash by cooling the skin and keeping it dry, while the other conditions require more urgent care and attention if needed.