How It Feels
Taking your temperature by mouth is only mildly uncomfortable,
since you must keep your mouth closed and breathe through your nose while the
thermometer is in place.
Taking a rectal temperature can be slightly uncomfortable but
should not be painful.
Taking your temperature with an ear thermometer causes little or no
discomfort. It is not inserted very far into the ear, and it provides a reading
in only a few seconds. For this reason, the ear thermometer is widely used in
health professional's offices and hospitals. However, it may be less accurate
than rectal thermometers.
Taking your temperature with a plastic strip thermometer feels like
having an adhesive bandage on your forehead. Although it causes very little
discomfort, it is not as reliable as other methods, so another kind of
thermometer should be used if the plastic strip shows an abnormal
temperature.