A fever is generally a sign that the body is fighting off an infection, and isn’t considered dangerous on its own. How to respond tends to depend on your child’s age and any other symptoms present, based on AAP guidance.
Taking Your Child’s Temperature
For infants 3 months and younger, a rectal reading is considered the most accurate method. Armpit or ear thermometers can work as a general reference for older children. A temperature of 100.4°F (38°C) or higher is generally considered a fever.
When to Consider Fever Medicine
Fever-reducing medicine can be considered once temperature climbs above 101.3°F (38.5°C) or when your child seems uncomfortable or low-energy. Acetaminophen is approved from 2 months of age, and ibuprofen from 6 months of age, and dosing instructions should always be followed carefully. Aspirin isn’t recommended for anyone under 18 because of the risk of Reye syndrome.
What Helps at Home
Dressing your child in light clothing, keeping the room comfortably cool, and wiping down with lukewarm water can help bring a fever down. If your child is drinking fluids and still playful, overall behavior tends to matter more than the exact number on the thermometer.
When to Seek Care Right Away
For infants younger than 3 months, a temperature of 100.4°F (38°C) or higher calls for immediate medical care, any time of day. A fever above 104°F (40°C), a fever that doesn’t respond to medicine, seizures, extreme lethargy or unresponsiveness, or breathing trouble call for an emergency room visit. This information is based on U.S. (AAP) guidance; if you live elsewhere, check with a local pediatric provider for country-specific recommendations. This information isn’t a diagnostic tool and doesn’t replace advice from a medical professional.