Fever Facts

Fever is one of the most common symptoms of the flu. Knowing what a fever is and how to measure it is key in combating the virus.

• What is a fever? A normal body temperature is 98.6 degrees. If your thermometer reads 100 degrees or higher, then you have a fever.
• Use a thermometer and take note of specific temperatures. “My face felt hot” is not nearly as useful to a doctor as “the thermometer reads 101.” With more specific information, doctors can make better diagnoses and advise better treatment.
• Digital thermometers are safer and more precise. Do NOT use glass thermometers, which are difficult to read and can break and cause injury.
• Always clean the thermometer with rubbing alcohol or soap and water before using. Rinse with cool water, NOT hot water, which may cause an incorrect reading.
• For adults and children over four, place the thermometer under the tongue. For babies and children under four, place the thermometer under the armpit.
• Use over-the-counter medicines such as acetaminophen (Tylenol) or ibuprofen (Motrin, Advil, Nuprin) to reduce fever.
• Wait 24 hours after fever has subsided (without the aid of fever-reducing medicine) before returning to work or school.