Question
Children often can only have their temperature taken under the armpit or rectum as they cannot place the thermometer in their mouth. Some say that a reading taken under the armpit should be increased by 0.5 degrees. Is this correct?
Answer
When measuring a child’s body temperature, it is essential to use a thermometer specifically designed for infants and choose an appropriate measurement site based on age and physical condition. The reading taken under the armpit is generally lower than that taken rectally, but the specific degree of increase depends on the thermometer and the manufacturer’s instructions. Generally, rectal temperature is the most accurate, with readings typically 0.2 to 0.5 degrees higher than those taken under the armpit. However, regardless of the method used, one should follow the instructions on the thermometer and ensure that the measurement time is sufficient, usually about 5 minutes. When measuring a child’s body temperature, parents should keep the thermometer tightly against the skin and ensure that the child remains still to minimize errors. If there are any doubts about the measurement results, it is advisable to consult a doctor for professional advice.