Heat exhaustion is characterized by which symptoms?

• A. Hot Dry Skin, Altered Mental Status
• B. Shivering, Alert
• C. Unconscious, Bradycardia
• D. Sweating, Weakness, Nausea

Answer: (D)

Heat exhaustion happens when the body's heat-regulation and fluid balance are overwhelmed by heat and dehydration. The cooling mechanism is still active, so the skin is usually moist rather than dry, and the most common signs come from dehydration: weakness from fatigue, along with nausea and sometimes dizziness or cramps. Mental status is generally normal or only mildly affected, which helps distinguish it from more severe heat illnesses. The combination of sweating, weakness, and nausea is classic for heat exhaustion because it reflects both ongoing sweating to cool the body and the volume and electrolyte losses that hot conditions cause. In contrast, hot dry skin with altered mental status points to heat stroke, shivering with alertness suggests cold exposure rather than heat illness, and unconsciousness with bradycardia is not typical of heat exhaustion.