Fever occurs when the body's temperature rises to 99.4° or higher. A thermometer is used to measure body temperature; it can be placed under the tongue to measure the oral temperature or in the center of the armpit to measure the axillary temperature. These two methods are used to measure temperature in children older than 3 months old. Consult a doctor for the best way to measure temperature in an infant younger than 3 months.
If you don't get a temperature reading in the display window, check the battery of your digital thermometer or read the instructions again to make sure you've followed directions correctly.
An oral temperature higher than 100.4° is considered a fever. Follow these quick, easy methods for taking your baby's oral temperature.
An axillary temperature higher than 99.4° is considered a fever, and it is usually 1° lower than an oral temperature. This axillary method is not as accurate as the oral method, but you may prefer to use it if your baby cannot hold a thermometer in his mouth. Follow these guidelines for taking your baby's axillary temperature.
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