DON'T Starve a Fever.
Ignore the old saying ("Feed a cold, starve a fever"), says pediatrician David L. Hill, M.D., author of Dad to Dad: Parenting Like a Pro. Children with a fever may be less hungry than normal, but when they do want to eat, offer a generally healthy, well-balanced diet. Nourished kids may be better able to fight infections.
DO Keep Him Hydrated.
Fever sweats can dehydrate a child, so offer lots of water (or, for vomiting and diarrhea, an electrolyte drink).
DON'T Underdress (or Overdress) Your Child.
It's natural for a kid developing a fever to want to be dressed more warmly than others in the room, and a child breaking a fever will want to cool down, but Dr. Hill recommends not to overdo it either way.
DO Consider Using a Lukewarm Compress.
If your child is vomiting and unable to keep medicine down, fill your tub with an inch or two of tepid water and use a washcloth to dribble it over your child's trunk, arms, and legs to help lower her core temperature.
1. How Old is Your Child?
Generally, the younger she is, the more worrisome a fever is. Call the doctor if your baby is newborn up to 3 months and has a fever of 100.4°F or higher; your 3- to 6-month-old has a temperature of 102°F or higher; or your child older than 6 months has a fever of 103°F or higher.
2. How Long Has He Had the Fever?
For a baby 3 to 12 months, call for any fever 100.4°F or higher that lasts more than 24 hours. Call if the fever lasts two or more days with no improvement in a child between 1 and 2 years, and for kids older than 2 if it hasn't improved after three days.
3. Are There Other Symptoms?
Call if you spot certain signs that suggest an illness requiring more treatment, like strep throat, an ear infection, or a urinary-tract infection. These include: repeated vomiting and/or diarrhea; severe ear pain, headache, and/or sore throat; stiff neck, listlessness, trouble breathing, unexplained rash, signs of dehydration (fewer wet diapers, decreased or no tears).