For premature infants or infants less than 3 months old, call your child's doctor for instructions. For older children, some doctors believe that "fever is your friend" and does not require any treatment such as giving fever-reducing medicines until the fever is 102°F (38.8°C) or if the child is fussy and uncomfortable. There is evidence that fevers help to fight an infection.
In general, the main reason for treating a fever is to keep the child as comfortable as possible rather than getting the temperature back to normal.
If your child's temperature is more than 102°F (38.8°C), you may give your child a fever medicine such as acetaminophen (Tylenol) or ibuprofen (Motrin or Advil).
Ibuprofen is not recommended in children under 6 months of age; acetaminophen is preferred. Use ibuprofen or acetaminophen in children over 6 months of age.
Do not alternate ibuprofen and acetaminophen to treat fever unless recommended by your doctor.
Never give aspirin to a child. The use of aspirin has been linked with a rare disorder called Reye's syndrome, which can be fatal.
Remember that all medicines can be poisonous if too much is taken. Follow instructions on the label. Be sure to keep all medicines out of the reach of children at all times.