At what body temperature should heat exhaustion symptoms typically arise?

Heat exhaustion symptoms typically arise when the body temperature reaches 38°C or above. This condition occurs when the body is unable to maintain its normal temperature due to excessive heat exposure and dehydration, often in hot and humid environments.

At this elevated temperature, the body begins to show signs that it is struggling to cool itself. Symptoms of heat exhaustion can include heavy sweating, weakness, dizziness, nausea, headache, and a rapid pulse. Understanding that this threshold correlates with the body’s physiological response to heat stress helps individuals recognize early signs and take action, such as moving to a cooler area, hydrating, or resting.

While some symptoms can manifest at slightly lower temperatures, particularly in sensitive individuals or cases of severe exposure, the standard criteria typically identify the onset of heat exhaustion at 38°C. This highlights the importance of monitoring body temperature and environmental conditions during physical activity or extended periods outdoors.