Treatment is similar for both heat exhaustion and heat stroke. 

1.    Take the victim out of the heat and place in a cool environment.

2.    Cool the body slowly with cool, wet towels or sheets.  If possible, put the victim in a cool bath.

3.    Have the victim drink water, SLOWLY, at the rate of approximately half a glass of water every 15 minutes.  Consuming too much water too quickly will cause nausea and vomiting in a victim of heat sickness.

4.    If the victim is experiencing vomiting, cramping, or is losing consciousness, DO NOT administer food or drink.  Alert a medical professional as soon as possible, and keep a close watch on the individual until professional help is available.