Kids & Family

Child gets a fever at night: what to do?

A step-by-step guide for parents on how to safely manage a child's fever at night, including when to call for help and what to avoid.

Written by Dr. Sophie Laurent · Reviewed by Dr. Laura Chen · Updated October 31, 2026 · Reviewed November 1, 2026 · 3 min read

Immediate actions

  1. 1 Check the child's temperature and observe for other symptoms.
  2. 2 If the child is under 3 months old with a fever, call emergency services or a doctor immediately.
  3. 3 Keep the child comfortable, offer fluids, and dress them lightly.
  4. 4 Do not give aspirin to a child. Use fever medication only as directed by a doctor.
  5. 5 Seek emergency care if the child has trouble breathing, is hard to wake, or has a seizure.

What not to do / warning

Call emergency services immediately if your child is under 3 months old with a fever, has trouble breathing, is hard to wake, or has a seizure.

It can be frightening when your child develops a fever at night. A fever is a common sign that the body is fighting an infection. Most fevers are not dangerous, but they can make your child uncomfortable and may require medical attention in some cases. This guide will help you decide what to do and when to get help.

What is happening?

A fever is a body temperature of 100.4°F (38°C) or higher. It is usually caused by a viral or bacterial infection. Fever itself is not an illness; it is a symptom. The height of the fever does not always indicate how serious the illness is. How your child looks and acts is more important.

Emergency warning

Call your local emergency services immediately if your child:

  • Is under 3 months old and has a rectal temperature of 100.4°F (38°C) or higher.
  • Has trouble breathing or is breathing very fast.
  • Is hard to wake up or is unusually drowsy.
  • Has a seizure (convulsion).
  • Has a stiff neck, severe headache, or a rash that does not fade when pressed.
  • Is dehydrated (no tears, dry mouth, little urine).
  • Has a fever above 104°F (40°C) that does not come down with medication.

What to do first

  1. Check the temperature. Use a digital thermometer. For infants, a rectal temperature is most accurate. For older children, oral, ear, or forehead thermometers are fine.
  2. Observe your child. Note their behavior, breathing, and any other symptoms like cough, rash, or vomiting.
  3. Keep them comfortable. Dress them in light clothing and use a light blanket. Do not bundle them up.
  4. Offer fluids. Give water, oral rehydration solution, or breast milk/formula frequently to prevent dehydration.
  5. Consider fever medication if needed. If your child is uncomfortable, you may give acetaminophen or ibuprofen, but only in the correct dose for their age and weight. Always follow the package instructions or your doctor's advice. Do not give aspirin to children.

What NOT to do

  • Do not give aspirin to a child or teenager due to the risk of Reye's syndrome.
  • Do not use cold baths or ice packs to bring down a fever; this can cause shivering and raise the core temperature.
  • Do not overdress or overheat the child.
  • Do not give fever medication more often than recommended.
  • Do not ignore signs of serious illness even if the fever is not very high.

When to call for help

Call your doctor or seek medical care if:

  • Your child is 3-6 months old with a fever of 102.2°F (39°C) or higher.
  • The fever lasts more than 3 days.
  • Your child has a sore throat, ear pain, or vomiting that persists.
  • Your child is not drinking enough fluids or is urinating less.
  • You are worried or unsure.

What to monitor

Keep an eye on your child's temperature, fluid intake, urine output, and behavior. Check on them regularly through the night. If they are sleeping comfortably, you do not need to wake them to give medication.

How to prevent it

Handwashing, avoiding contact with sick people, and keeping up with vaccinations can help prevent infections that cause fever.

Remember, this is general information and not a substitute for professional medical advice. When in doubt, call your doctor or emergency services. Trust your instincts: if your child seems very ill, get help immediately.

Sources & references

  • American Academy of Pediatrics: Fever and Your Child (https://www.healthychildren.org/English/health-issues/conditions/fever/Pages/default.aspx)
  • CDC: Fever (https://www.cdc.gov/antibiotic-use/community/for-patients/common-illnesses/fever.html)
  • NHS: Fever in children (https://www.nhs.uk/conditions/fever-in-children/)