Body temperatures vary slightly from person to person and at different times of day. The average temperature has traditionally been defined as 98.6 F (37 C). A temperature taken using a mouth thermometer (oral temperature) that's 100 F (37.8 C) or higher is generally considered to be a fever. Depending on what's causing a fever, other fever signs and symptoms may include:  Sweating Chills and shivering Headache Muscle aches Loss of appetite Irritability Dehydration General weakness  Taking a temperature To take a temperature, you can choose from several types of thermometers, including oral, rectal, ear (tympanic) and forehead (temporal artery) thermometers. Oral and rectal thermometers generally provide the most accurate measurement of core body temperature. Ear or forehead thermometers, although convenient, provide less accurate temperature measurements. In infants, a rectal temperature, if doable, is somewhat more accurate. When reporting a temperature to your health care provider, give both the reading and the type of thermometer used.
body temperatures vary slightly person person times day  average temperature traditionally defined 98 6 (37 c)  temperature taken using mouth thermometer (oral temperature) that's 100 (37 8 c) higher generally considered fever  depending what's causing fever  fever signs symptoms may include:  sweating chills shivering headache muscle aches loss appetite irritability dehydration general weakness  taking temperature take temperature  can choose types thermometers  including oral  rectal  ear (tympanic) forehead (temporal artery) thermometers  oral rectal thermometers generally accurate measurement core body temperature  ear forehead thermometers  convenient  accurate temperature measurements  infants  rectal temperature  doable  accurate  reporting temperature health care provider  give reading type thermometer used
fever