A casualty presents with altered mental status and hot skin; this presentation is most consistent with which condition?

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

Answer: (C)

Overheating with brain involvement is heat stroke. When the body's cooling system fails, core temperature spikes high enough to disrupt brain function, leading to altered mental status such as confusion, agitation, or even seizures. The hot skin reflects this dangerous hyperthermia. Other heat problems don’t usually produce both severe hyperthermia and CNS changes: heat exhaustion tends to have dehydration with sweating and fatigue, heat cramps are muscle cramps tied to electrolyte imbalance with normal or only mildly elevated temperature, and hypovolemia often presents with dizziness or fainting and cooler, clammy skin rather than markedly hot skin. This presentation is a medical emergency, so rapid cooling and urgent medical care are essential.