A fever in a child can usually be managed safely at home with fluids, light clothing, and age-appropriate fever-reducing medication. Most fevers are the body’s natural way of fighting infection and don’t need aggressive treatment. The goal isn’t to eliminate the fever entirely but to keep your child comfortable while their immune system does its job.
What Counts as a Fever
Your child has a fever if their rectal, ear, or forehead temperature reaches 100.4°F (38°C) or higher. For an oral reading, the threshold is 100°F (37.8°C), and for an armpit reading, it’s 99°F (37.2°C). Rectal temperatures are the most accurate for babies and young toddlers, while oral thermometers work well for children old enough to hold one under their tongue.
Why Fever Isn’t Always the Enemy
Fever is part of your child’s immune defense. When a virus enters the body, the immune system releases chemicals that raise core temperature. That higher temperature makes the environment uncomfortable for the virus to survive, essentially trying to cook it out. White blood cells also become more active in warmer conditions, responding faster against infection.
This means a low-grade fever in an otherwise alert, hydrated child who’s still playing or interacting doesn’t always need to be treated. The reason to bring a fever down is comfort. If your child is miserable, achy, or not sleeping, that’s when intervention helps.
Fever-Reducing Medication by Age
Two over-the-counter medications are commonly used for children: acetaminophen and ibuprofen. Both reduce fever and ease discomfort, but they have different age limits.
Acetaminophen (the active ingredient in Children’s Tylenol) should not be given to children under 2 without a doctor’s guidance. The liquid form comes as 160 mg per 5 mL. For children under 12, it can be given every 4 hours as needed, with a maximum of 5 doses in 24 hours. Always use your child’s weight to determine the correct amount. If you don’t know their weight, use their age as a backup.
Ibuprofen (the active ingredient in Children’s Motrin or Advil) should not be given to babies under 6 months. For children between 6 months and 2 years, check with your pediatrician first. Ibuprofen can be given every 6 to 8 hours. The children’s liquid form typically comes as 100 mg per 5 mL, and dosing is based on weight:
- 12 to 17 lbs: 2.5 mL
- 18 to 23 lbs: 4 mL
- 24 to 35 lbs: 5 mL
- 36 to 47 lbs: 7.5 mL
- 48 to 59 lbs: 10 mL
- 60 to 71 lbs: 12.5 mL
- 72 to 95 lbs: 15 mL
Never give aspirin to children, as it’s linked to a rare but serious condition called Reye’s syndrome.
Should You Alternate Between the Two?
Many parents have heard about alternating acetaminophen and ibuprofen every few hours. The American Academy of Family Physicians has cautioned against this practice. There is no scientific evidence that alternating is safer or more effective than using a single medication. More importantly, the alternating schedule (every four hours for one, every six for the other) gets confusing fast and increases the risk of accidentally overdosing on one of the medications. Stick with one or the other.
Keep Your Child Hydrated
Fever increases fluid loss through sweat and faster breathing, so dehydration is a real concern. The type of fluid depends on your child’s age.
For babies 6 months to 1 year, give undiluted breast milk or formula. Don’t use plain water at this age. If your baby is vomiting, switch to an oral rehydration solution (like Pedialyte) that contains the salts and sugars needed for the intestines to absorb fluid quickly.
For children over 1, diluted apple juice or a diluted sports drink works well. Mix half water, half juice or sports drink. Popsicles and broth are also good options for older kids who resist drinking.
The key to keeping fluids down, especially if your child feels nauseated, is small amounts given frequently. Use a syringe or medicine cup and offer fluid every 5 minutes for at least 2 hours:
- 6 months to 1 year: 2 teaspoons (10 mL) every 5 minutes
- 1 to 2 years: 3 teaspoons (15 mL) every 5 minutes
- Over 2 years: 2 tablespoons (30 mL) every 5 minutes
Cooling Methods That Actually Help
A room-temperature bath or shower that feels slightly cool to the touch can bring some relief. Avoid cold water or ice baths, which cause shivering and can actually raise your child’s internal temperature as the body fights to warm back up.
Dress your child in light, single-layer clothing. If they feel chilled and want a blanket, a single light blanket is fine. Piling on heavy quilts or bundling them in multiple layers traps heat and can push body temperature higher. Keep the room at a comfortable temperature rather than cranking up the heat.
A cool, damp washcloth on the forehead can feel soothing, though it won’t significantly lower a fever on its own. Rest matters more than any cooling technique. Let your child sleep if they’re tired.
When a Fever Needs Medical Attention
Most fevers resolve on their own in a few days. But certain situations call for a prompt call to your pediatrician or a trip to the emergency room.
Any fever of 100.4°F or higher in a baby under 3 months old needs immediate medical evaluation. At that age, a fever can signal a serious infection that young immune systems can’t handle alone. Don’t give medication first and wait to see what happens. Call right away.
For older children, call your doctor if the fever exceeds 104°F (40°C).
Beyond the number on the thermometer, watch for these warning signs at any age:
- Dehydration: no urination for 8 hours, no tears when crying, dry mouth and tongue. In babies, a sunken soft spot on the head.
- Stiff neck: your child can’t touch their chin to their chest. This can be an early sign of meningitis.
- Lethargy: staring into space, not smiling, too weak to cry, or very difficult to wake up.
- Confusion: saying strange things, seeing things that aren’t there, or not recognizing you.
- Trouble breathing: fast breathing, grunting with each breath, skin pulling in between the ribs, or bluish lips. Bluish or gray lips, tongue, or gums mean not enough oxygen is reaching the blood. Call 911.
- Purple or blood-red spots on the skin: especially spots that don’t fade when you press on them. Combined with fever, these can indicate a serious bloodstream infection.
- Inconsolable crying: constant, nonstop crying that isn’t relieved by holding or comforting.
- Trouble swallowing with drooling: sudden drooling or spitting can signal severe throat swelling.
What to Do if Your Child Has a Seizure
About 2 to 5 percent of children between 6 months and 5 years will experience a febrile seizure, a convulsion triggered by fever. These look frightening: your child may shake uncontrollably, stiffen up, lose consciousness, or lose control of their bladder. Their eyes may roll back.
Most febrile seizures are simple ones that last under 15 minutes (usually just seconds to a couple of minutes) and cause no lasting harm. Here’s what to do in the moment:
- Stay calm and note the time.
- Gently lay your child on the floor. Don’t place them on a table, bed, or try to hold them in your arms. This reduces the risk of a fall or injury.
- Don’t put anything in their mouth. They won’t swallow their tongue.
- Call 911 if the seizure lasts more than 5 minutes.
After a short seizure ends on its own, call your pediatrician. They’ll want to evaluate what caused the fever and whether any follow-up is needed.