Heat exhaustion is caused by excessive fluid loss in a hot environment.
Heat stroke is caused by failure of the body s heat regulating mechanism.
Heat stroke may lead to permanent disability and death. In heat stroke the skin is flushed, hot, and dry, and temperature may be elevated. The victim may be confused, develop seizures, breathe shallowly, and have a weak, rapid pulse. Stretching or directing pressure on the muscles may decrease cramping. Heat exhaustion is treated with rest in a cool location, drinking water or electrolyte solution, elevating the feet 12 inches, and IV fluids if available.