Which method is NOT typically used to measure a patient's temperature?

The method that is not typically used to measure a patient's temperature is dermal. While dermal temperature measurement relates to measuring temperature through the skin's surface, it is not a commonly recognized or standardized method for assessing body temperature in clinical settings.

In contrast, oral, rectal, and axillary temperature measurements are widely accepted and frequently employed techniques. Oral temperature measurement involves placing a thermometer under the tongue, which provides reliable readings of core body temperature. Rectal measurement, while often considered more invasive, is one of the most accurate methods for core body temperature assessment, especially in infants or when precise monitoring is needed. Axillary temperature involves placing a thermometer in the armpit, which tends to be less invasive but can also provide useful information, although it may be slightly less accurate than the other methods.

Overall, dermal measurement lacks the same level of clinical acceptance and reliability as the other methods mentioned, making it the correct choice for this question.