According to MedicineNet in "Definition of Heat Stroke," heat stroke occurs when the body's core temperature rises above 104°F (40°C) and is accompanied by hot, dry skin and central nervous system abnormalities such as delirium, convulsions or coma. Since heat stroke is a life-threatening condition, it is important to watch people for heat stroke symptoms. MedicineNet states that heat stroke that results from exposure to high environmental temperatures is termed nonexertional heat stroke, and heat stroke that results from strenuous exercise is called exertional heat stroke. Regardless of the type of heat stroke a person experiences, heat stroke signs are life-threatening, and immediate medical attention is necessary when heat stroke symptoms begin. When the body cannot control its temperature, heat stroke occurs because the sweating mechanism fails. The body is not able to cool down. Body temperature can rise to 106°F (41.1°C) or higher within a few minutes. Hea