Your baby has a fever

Call for any fever if your baby is younger than 3 months old.

Call if your baby is 3 to 6 months old, has a temperature up to 100.4 degrees Fahrenheit (38 degrees Celsius) and seems sick. Also call if your baby has a temperature higher than 100.4 degrees Fahrenheit (38 degrees Celsius).

Call if your baby is 6 to 24 months old and has a temperature higher than 100.4 degrees Fahrenheit (38 degrees Celsius) that lasts more than one day. If your baby also has symptoms such as a cold, cough or diarrhea, you may want to call your baby's healthcare professional sooner. This might depend on how bad the symptoms are.

If you haven't already called your baby's healthcare professional, call if your baby's fever lasts more than three days.