A: Generally speaking, there's no need to call the doctor right away unless you notice that your child is running a high fever for his age: - Your baby is younger than 3 months and has a rectal temperature of 100.4 degrees F. or higher. - Your baby is 3 to 6 months and has a rectal temperature of 101 degrees F. or higher. - Your child is older than 6 months and has a rectal temperature of 103 degrees F. or higher. But you should also alert the pediatrician if you notice any of the following conditions: - Your baby is very dehydrated: Hasn't had a wet diaper in six hours, has a dry mouth, and has few or no tears when she cries. - Cold symptoms don't start to improve after five days (could indicate it's something else, like bronchitis, a sinus infection, or even pneumonia). - Your kid seems very fussy, tired, and out of it, even with no fever. - Your child's breathing is rapid or labored. - Your child refuses to drink (a sign she may have trouble breathing). --Lauren Gelman
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