When Your Child Has a Fever: A Parent’s Guide
A fever is your child’s body doing its job—fighting off infection. While it can be scary to see the thermometer climb, most fevers are harmless and will resolve on their own. Here’s how to keep your child comfortable while their immune system does the work.
The Most Important Thing: Watch Your Child, Not Just the Number
A child with a 103°F fever who is drinking, playing, and alert is often less concerning than a child with a 100°F fever who is lethargic and refusing fluids.
Focus on how your child looks and acts:
- Are they drinking fluids?
- Are they making eye contact and responding to you?
- Can you comfort them or make them smile?
- Are they urinating normally?
If yes to most of these, you can likely manage the fever safely at home.
Step 1: Decide If You Need to Treat the Fever
You don’t always need to treat a fever. The number itself isn’t dangerous—what matters is how your child feels.
Treat the fever if:
- Your child is uncomfortable, fussy, or in pain
- The fever is interfering with sleep or rest
- Your child is older than 3 months and the fever is above 102°F
You can skip fever medicine if:
- Your child is drinking well and acting fairly normal
- They’re sleeping comfortably
- The fever is mild (under 101°F) and not bothering them
Remember: Fever is helping fight infection. Lowering it slightly can help your child feel better, but you don’t need to get it back to “normal.”
Step 2: Choose the Right Medicine
Acetaminophen (Tylenol)
- Safe for: Babies 2 months and older
- Dosing: Every 4-6 hours as needed
- Works in: 30-60 minutes
- How much: Use weight-based dosing (ask your pharmacist or check the package)
Ibuprofen (Advil, Motrin)
- Safe for: Babies 6 months and older
- Dosing: Every 6-8 hours as needed
- Works in: 30-60 minutes
- Lasts longer than acetaminophen
- Bonus: Also reduces inflammation (helpful for ear infections, sore throats)
⚠️ Important Safety Rules:
- Never give aspirin to children (risk of Reye’s syndrome)
- Don’t alternate acetaminophen and ibuprofen unless your doctor tells you to—it’s easy to accidentally overdose
- Measure carefully using the syringe or cup that comes with the medicine
- Don’t guess the dose—always use your child’s current weight, not age
Step 3: Keep Your Child Comfortable
Fluids, Fluids, Fluids
Fever increases fluid loss through sweating and faster breathing. Offer:
- Water
- Breast milk or formula (for babies)
- Diluted juice
- Popsicles or ice chips
- Pedialyte (if your child isn’t eating well)
How much is enough? Your child should urinate at least every 6-8 hours. Light yellow urine = good hydration.
Dress Them Lightly
- One layer of lightweight clothing
- A light blanket if they’re cold, but don’t bundle them up
- If they’re shivering, that’s okay—it’s the body’s way of raising temperature. Give fever medicine and let it work.
Room Temperature Matters
- Keep the room comfortably cool (68-72°F)
- A fan can help with air circulation, but don’t point it directly at your child
Rest Is Healing
- Let your child rest as much as they want
- Quiet activities (books, movies, coloring) are fine
- Don’t force them to stay in bed if they want to play—activity level is a good sign!
Step 4: Monitor and Document
Keep track of:
- Temperature readings (with the time and method used)
- When you gave medicine (dose and time)
- How your child is acting (drinking? playing? sleeping?)
- Other symptoms (cough, rash, vomiting, etc.)
This information is helpful if you need to call your doctor.
What NOT to Do
❌ Don’t give a cold bath or alcohol rub
- This can cause shivering, which raises body temperature
- It’s uncomfortable and unnecessary
❌ Don’t “starve a fever”
- Offer food if your child is hungry
- If they’re not eating, that’s okay—focus on fluids
❌ Don’t wake a sleeping child to give medicine
- Sleep is healing. If they’re resting comfortably, let them sleep.
❌ Don’t overdose on medicine
- More medicine doesn’t work faster
- Stick to recommended doses and timing
When to Call Your Doctor
Call during office hours if:
- Fever lasts more than 3 days
- Fever comes and goes for more than a week
- Your child has a chronic medical condition (asthma, heart condition, immune problems)
- You’re worried or have questions
Call immediately or go to urgent care if:
- Your baby is under 3 months old with any fever ≥100.4°F (rectal)
- Fever is ≥105°F
- Your child is not drinking and shows signs of dehydration (no tears, dry mouth, no urine in 8+ hours)
- Fever goes away for 24+ hours, then comes back
- Your child has a rash that doesn’t fade when you press on it
- Your child is acting very sick (won’t make eye contact, inconsolable crying, severe pain)
Go to the ER or call 911 if:
- Your child has a seizure
- Difficulty breathing or blue lips
- Severe headache with stiff neck
- Your child is limp, floppy, or unresponsive
- You’re very worried and your instinct says something is seriously wrong
Trust Your Instincts
You know your child best. If something feels off—even if you can’t put your finger on what—it’s always okay to call your pediatrician or seek care. Healthcare providers would rather you call with questions than wait when something is truly wrong.
Most fevers resolve within 3-5 days as the body fights off the infection. With rest, fluids, and watchful waiting, your child will be back to themselves soon.
Quick Reference Chart
| Age | Fever Definition | Medicine Options | When to Worry |
|---|---|---|---|
| Under 3 months | ≥100.4°F (rectal) | Call doctor immediately | Any fever—call now |
| 3-6 months | ≥100.4°F | Acetaminophen only | Fever >102°F or acting sick |
| 6+ months | ≥100.4°F | Acetaminophen OR Ibuprofen | Fever >3 days or very high |
Need more help? Contact your pediatrician’s nurse line—most practices have after-hours triage to help you decide if your child needs to be seen.