Associated Press Heat kills by taxing the human body beyond its abilities. Recognizing the symptoms and reacting properly can save lives. The human body tries to maintain a constant temperature. When cooling is needed, it tries to dissipate excess heat by moving blood to the skin and by evaporating sweat. When it's too hot for the blood's heat to dissipate through the skin, and so humid evaporation is reduced, trouble can set in.
Ointments can help mild cases.
If blisters break, apply a dry sterile dressing. Serious, extensive cases should be seen by a physician. Firm pressure on cramping muscles, or gentle massage, can relieve spasms. Give sips of water. If nausea occurs, discontinue water.