What to Expect by Age
Newborns (<3 months) with a measured fever ≥38°C (100.4°F) should be evaluated promptly.
From 3–12 months, mild fever can accompany common viral illnesses; behavior and hydration matter most.
Common Concerns
Thermometer method influences accuracy (rectal is most reliable in infants).
Fever alone is not an illness; it is a sign. Focus on breathing, hydration, responsiveness.
When to See a Doctor
Any infant <3 months with ≥38°C.
Any age with breathing difficulty, bluish lips/face, persistent vomiting, seizure, or unresponsiveness.
Quick Tips
Dress lightly; keep room cool and ventilated.
Offer fluids frequently; monitor diapers and alertness.
Avoid cold baths or alcohol rubs.
Safety Note
This article is general guidance and not a diagnosis. Follow local medical advice.
FAQ
- Q: Is teething causing fever?
A: Teething may cause slight warmth or irritability, but persistent ≥38°C fever suggests another cause. - Q: Which thermometer is best?
A: Rectal thermometers are most accurate for infants; follow device instructions strictly. - Q: How long can fever last?
A: Viral fevers often improve in 2–3 days, but watch overall condition and hydration. - Q: What if baby refuses fluids?
A: Offer small, frequent sips. If refusal persists or dehydration signs appear, seek care.