Fever in a child: how to measure and when to see a doctor
child fever · high temperature in a child · how to take a temperature · when to treat a fever · fever in children
How to measure a child's temperature correctly, when to lower it, and when to call a doctor urgently.
When your child feels hot, limp, or fussy, or you suspect they are sick.
⏱ Duration: measuring takes from a few seconds to a few minutes, depending on the thermometer
Be sure to tell your doctor
How to prepare
- Thermometer. An electronic one is easiest. A mercury one is dangerous if it breaks.
- Where to measure. Babies are often measured under the arm or in the ear. How to do it right is in your thermometer's instructions.
- Medicine. Use only a children's fever reducer, in a dose based on your child's weight. Check the dose with your pediatrician.
- Fluids. With a fever, your child needs to drink more.
What to bring
- A thermometer
- Notes: time, temperature, medicines
- A list of questions for the pediatrician
How it goes
- Wait 15 to 20 minutes after running, eating, or a bath
- Wipe the armpit with a dry cloth
- Put the thermometer in the armpit and hold your child's arm against the body
- Hold until the beep or as long as the instructions say
- Write down the time and the number
- Undress your child, do not bundle them up
- Offer drinks more often, in small amounts
What you'll feel
- Your child may be fussy and eat poorly, which is usual with a fever
- How your child behaves matters more than the exact number
Afterwards
- If your child plays and drinks, you can usually watch them and call the pediatrician
- A fever reducer is more often given when the child feels bad, not just by the number, so check with your pediatrician
- Do not rub with alcohol or vinegar
- Measure again 30 to 60 minutes after the medicine
Contact a doctor straight away if
- Your child is under 3 months old with a temperature of 38°C (100.4°F) or higher: call emergency services or the pediatrician right away
- A seizure, your child will not wake up, or is very limp: call emergency services
- A rash that does not fade when pressed with a glass: call emergency services
- Trouble breathing, not drinking, or no urine for more than 6 to 8 hours: call emergency services
Common questions
At what number should I bring the temperature down?
Usually the focus is on how your child feels, not only the number. Your pediatrician can tell you exactly for your child.
Can I bathe a child with a fever?
A warm shower is usually fine if your child does not feel very ill. Do not cool with cold water or rubdowns.