During heatstroke, the body’s normal mechanisms for dealing with heat are lost. The main indication of heatstroke is elevated temperature with hot, dry skin, that is not sweaty. Other signs may include:

• Rapid heartbeat
• Rapid and shallow breathing
• Confusion
• Increased or lowered blood pressure
• Unconsciousness
• Cessation of sweating

Fainting can be the first sign in older adults. Other risk factors include, alcohol use, cardiovascular disease, certain medications and vigorous exercise. Older adults, people who are obese, people with Lupus or people born with an impaired ability to sweat are at high risk of heatstroke.

If you suspect heatstroke:

• Move the person out of the sun and into a shady spot or air-conditioned space.
• Call 911 in the U.S. & Canada. (For other countries, see our First Aid page.)
• Cool the person by covering him or her with damp sheets or by spraying with water. Direct air onto the person with a fan or newspaper.