Is an underarm body temperature of 35.9°C normal?

An axillary body temperature of 35.9°C is generally considered abnormal.

The normal range for axillary temperature is between 36.1°C and 37°C. A reading of 35.9°C falls below this normal range, indicating that the patient's body temperature is slightly low. This may result from exposure to a cold environment combined with wearing insufficient clothing, leading to excessive heat loss. It could also be due to prolonged fasting or inadequate nutrition, resulting in reduced heat production by the body. Additionally, patients with hyperthyroidism may experience accelerated metabolism, which paradoxically can sometimes lead to poor thermoregulation and a measured axillary temperature of 35.9°C.

When an axillary temperature of 35.9°C is detected, it is recommended to use a different thermometer and increase the frequency of temperature measurements to obtain a more accurate assessment. Measures such as wearing more clothing and increasing food intake should be taken to improve the condition. If symptoms such as pallor, chills, or shallow breathing occur alongside the low temperature, prompt medical attention is necessary to prevent further decline in body temperature and the development of hypothermia.