A life-threatening emergency where the body's cooling mechanism fails. Temperature exceeds 104°F (40°C), causing altered mental state, red dry skin, and collapse.
Step-by-Step Guidance
Call EMS instantly. Heatstroke is a critical emergency that causes organ failure and brain damage.

Bring the patient to a cool, shaded area and strip off all outer clothing.

Immerse the patient in a tub of cold water. If unavailable, wrap them in wet sheets and spray them with cold water.

Place ice packs wrapped in cloth on the groin, armpits, and sides of the neck where major arteries run close to the surface.

Lay them flat. If they lose consciousness or stop breathing, begin CPR immediately.

Hospital ICU care (weeks)
Timeline is typical for uncomplicated healing. Always follow doctor guidance.