CALL 911 FIRST if emergency services are available. This page is for backup/offline reference.
Heatstroke
Body temperature regulation fails. Core temperature over 104°F (40°C). Medical emergency.
Critical Warning
Heatstroke is different from heat exhaustion — heatstroke is a life-threatening emergency.
Recognize the Signs
- High body temperature (104°F+)
- Hot, dry or damp skin (sweating may stop)
- Confusion, slurred speech, irrational behavior
- Rapid strong pulse, rapid breathing
- Throbbing headache
- Nausea, vomiting
- Loss of consciousness or seizures
Action Steps
Call 911 immediately
Heatstroke is a true emergency. Every minute of elevated core temp causes organ damage.
Move to cool place
Shade, air-conditioned room, or cold environment. Anywhere cooler than current location.
Cool aggressively
Priority: reduce core temp fast. Best methods: cold water immersion, spraying with water + fanning, ice packs to groin/armpits/neck, wet sheets.
Remove excess clothing
Strip to underwear. Loosen everything. Maximize skin exposure to cooling.
Offer cool water (if alert)
Small sips only, if victim is conscious and not vomiting. Do NOT force if confused or unconscious.
Monitor temperature
Aim for 101-102°F core temp, then stop aggressive cooling to prevent overcooling.
Do NOT Do
- Do NOT give alcohol, caffeine, or sugary drinks
- Do NOT give medication for fever (acetaminophen, aspirin) — doesn't work for heatstroke
- Do NOT leave victim alone
- Do NOT assume recovery — hospital evaluation is mandatory
Aftercare
After cooling, transport to hospital even if victim seems to recover. Kidney, liver, and brain damage can occur hours later.
When to Get Professional Help
Always 911. Heatstroke has 20-65% mortality even with treatment — professional intervention is non-negotiable.