At what core temperature does heat exhaustion typically occur?

Heat exhaustion is a serious condition that occurs when the body overheats, often due to prolonged exposure to high temperatures and excessive water loss through sweating. While it can manifest with symptoms such as heavy sweating, weakness, dizziness, and nausea, core temperature is a key factor in diagnosing the severity of heat-related illnesses.

Heat exhaustion typically occurs when the core body temperature rises to about 38 to 40 degrees Celsius (100.4 to 104 degrees Fahrenheit). The correct response indicates a recognition that a core temperature nearing 40 degrees Celsius (104 degrees Fahrenheit) is typically associated with this condition. At this temperature, the body is struggling to maintain thermoregulation, leading to the onset of heat exhaustion.

The other temperatures listed do not align with the threshold for heat exhaustion symptoms. For instance, temperatures lower than 38 degrees Celsius would not typically present the severe symptoms associated with heat exhaustion, while temperatures higher than 40 degrees could indicate heatstroke, a much more severe condition that requires immediate medical intervention.