For Children 4 Months Old or Older Who Have Been Immunized
1. Take Temperature
Rectal. For a child under 4 or 5 months, use a rectal thermometer to get an accurate reading. A child has a fever if the rectal temperature is above 100.4 F.
Oral. For a child over 4 or 5 months, you can use an oral or pacifier thermometer. The child has a fever if it registers above 100.4 F.
Ear. If the child is 6 months old or older, you can use an ear or temporal artery thermometer, but this may not be as accurate. Still, under most circumstances, it's a reasonable way to get a good enough estimate. If it's essential that you get an accurate reading, take a rectal temperature.
Armpit. If you take the child’s temperature in the armpit, a reading above 100.4 F usually indicates a fever.
2. If Temperature Is Below 102 Degrees F
You don't need to treat the fever unless the child is uncomfortable.
Make sure the child gets plenty of fluids and rest.
3. If Temperature Is Above 102 Degrees F but Below 105 Degrees
You can give child-formula acetaminophen (Tylenol). Ask your pediatrician before giving any fever-reducing medicine to a child for the first time.
Bathing or sponging the child with lukewarm water may help bring down the temperature. Do not use cold water, ice baths, or alcohol.