If you see any of the warning signs for heat stroke, you may be dealing with a life-threatening emergency. Have someone call for immediate medical assistance while you begin cooling the person who is ill. Response time will be critical.
• Get the person to a shady area.
• Remove restrictive clothing, equipment, and helmet.
• Cool the person rapidly:
• Immerse him or her in a tub of cool water or ice water.
• Place the person in a cool shower.
• Spray the person with cool water from a garden hose.
• Sponge the person with cool water.
• Apply icebags at the neck, armpit, and groin area.
• If the humidity is low, wrap the person in a cool, wet sheet and fan him or her vigorously.