When does your body temperature become too high?

Your body temperature is considered too high, or hyperthermic, when it exceeds the normal range of 36.5°C to 37.5°C (97.7°F to 99.5°F). A high body temperature can indicate a fever, which is the body's natural response to an infection or illness. However, extremely high body temperatures can be dangerous and may lead to heat-related illnesses such as heat exhaustion or heatstroke.

Some medical conditions, such as hyperthyroidism, can also cause elevated body temperatures. If you experience a high body temperature, it's important to monitor it and seek medical attention if it reaches 104°F (40°C) or higher, or if it persists for more than a few days.