Which systemic heat emergency is characterized by hot and dry skin and potential seizures?

• A. Heat cramps
• B. Heat exhaustion
• C. Heatstroke
• D. Hypothermia

Answer: (C)

Heatstroke is a life-threatening systemic heat emergency where the body's cooling mechanisms fail and core temperature soars. When core temperature rises to about 104°F (40°C) or higher, sweating often stops, so the skin becomes hot and dry. The brain bears the brunt of the heat, leading to altered mental status and even seizures. This combination—dry skin plus CNS dysfunction—is what sets heatstroke apart from other heat-related illnesses. Heat exhaustion, by contrast, typically features sweating with cool, clammy skin and dizziness but not this same level of core temperature and CNS impairment, while heat cramps involve muscle spasms with sweating but no major CNS symptoms, and hypothermia is the opposite problem from cold exposure. Immediate rapid cooling is essential—strip clothing, apply cool water or ice packs to the neck, groin, and armpits, and use cold-water immersion if available—along with airway/breathing support and rapid transport.