What should I do if my baby has a fever?

Immediate steps for a febrile baby

Fever in infants requires careful attention. For babies under 3 months, any rectal temperature of 100.4°F (38°C) or higher needs prompt medical evaluation. For older infants, consider the baby’s overall behavior and consult your pediatrician if fever is high or accompanied by concerning symptoms.

Home care measures:

  • Ensure adequate fluids and continue regular feedings.
  • Dress the baby in light clothing and keep the room comfortable.
  • Use infant acetaminophen or ibuprofen only as directed by your pediatrician and appropriate for age.

When to seek emergency care

  • Any fever in babies under 3 months.
  • High fevers, lethargy, difficulty breathing, persistent vomiting, dehydration, or a non-blanching rash.
  • If the baby is not responding normally or shows decreased urine output.

When in doubt, call your pediatrician — early assessment can prevent complications and provide peace of mind.