The symptoms of Sunstroke and Heatstroke are high fever, dizziness, headache, dry, hot skin, red face, and rapid pulse. Unconsciousness may result.
Call a doctor. Put the victim in a cool place, and cover him with a sheet. Loosen all clothing. Apply cold water over the body quickly and in large quantities to reduce the high fever. Use a garden hose (in a gentle stream, not full force), or pailfuls of very cold water.