When Should I Take My Child to the ER for a Fever? A Pediatrician Explains

When Should I Take My Child to the ER for a Fever? A Pediatrician Explains

Written & Medically Reviewed by Dr. G — Board-Certified Pediatrician  •  About Dr. G →
💡 Quick Answer

Most children with a fever do not need the ER. What matters most is how your child looks, breathes, drinks and responds to you.

Go to the ER for serious warning signs such as trouble breathing, being hard to wake, confusion, a seizure, a stiff neck, severe dehydration or a sudden purple or bruise-like rash.

A baby under 3 months with a temperature of 100.4°F (38°C) or higher should go to the ER for prompt evaluation.

✓ Key Takeaways
  • Most childhood fevers can be managed outside the ER.
  • Watch your child, not just the thermometer.
  • Breathing, alertness and hydration are key.
  • A baby under 3 months with 100.4°F (38°C) or higher needs ER evaluation.
  • Repeated temperatures above 104°F (40°C) need prompt medical guidance.
  • Severe symptoms matter more than the fever number alone.

When Should You Go to the ER for a Fever?

Fever is common in children. Most cases are caused by an infection and do not require emergency care.

The temperature number is only one part of the decision. Your child's condition matters more.

Ask four questions:

  • Is my child breathing comfortably?
  • Can I wake my child and get a normal response?
  • Can my child drink and keep fluids down?
  • Is there a seizure, stiff neck, severe pain or unusual rash?
🚨 Go to the ER Now

Go to the emergency room if your child has fever with:

  • Serious trouble breathing
  • Chest pulling in with each breath
  • Being very hard to wake
  • Confusion or not acting alert when awake
  • A seizure
  • A stiff neck
  • A sudden purple or bruise-like rash
  • Persistent vomiting that prevents drinking
  • Severe dehydration
  • A rapidly worsening or very ill appearance

Call 911 if your child cannot be awakened, has severe trouble breathing, turns blue or gray, has a seizure lasting more than 5 minutes, or you believe the situation is life-threatening.

What About a Baby Under 3 Months?

Very young babies are different.

A baby younger than 3 months with a rectal temperature of 100.4°F (38°C) or higher should be evaluated promptly in the emergency room.

Young infants can have serious infections without obvious symptoms. Do not wait to see if the temperature rises higher.

Do not routinely give fever medicine before the baby is evaluated unless a healthcare professional has told you to do so.

💜 Dr. G's Pearl

The child is more important than the number.

A child with 103°F who is drinking and talking may be less concerning than a child with 101°F who is hard to wake or struggling to breathe.

Does a Fever of 104°F Mean the ER?

Not automatically.

A temperature above 104°F (40°C) needs prompt medical guidance, especially if it happens repeatedly.

An older child who is alert, drinking and breathing comfortably may be able to see the pediatrician or receive urgent care instead.

Go to the ER if the high temperature comes with an emergency warning sign.

What If My Child Has a Seizure?

Place your child on a safe surface and turn them onto their side. Move hard objects away.

Do not hold your child down. Do not put anything in the mouth. Time the seizure.

Call 911 if a seizure lasts more than 5 minutes. Also call 911 for trouble breathing, blue skin or repeated seizures without recovery between them.

A first seizure also needs emergency medical evaluation.

When Is Dehydration an Emergency?

Fever can increase fluid needs. Vomiting, diarrhea and a sore throat can make drinking harder.

Watch for:

  • Very little urine
  • A very dry mouth
  • No tears when crying
  • Sunken eyes
  • Increasing weakness or sleepiness
  • Repeated vomiting
  • Being unable to drink

Severe dehydration or vomiting that prevents fluids from staying down needs urgent medical evaluation.

☎️ When to Call Your Pediatrician

Call your pediatrician or seek same-day care if:

  • The temperature repeatedly rises above 104°F (40°C)
  • Your child looks increasingly sick
  • There is trouble breathing that is not severe
  • You suspect dehydration
  • There is severe ear pain, sore throat or abdominal pain
  • Vomiting or diarrhea keeps happening
  • The fever lasts longer than expected
  • Your child has a weakened immune system or major chronic condition

When Can I Usually Watch My Child at Home?

Home care may be reasonable for an otherwise healthy child older than 3 months who:

  • Is alert and responds normally
  • Breathes comfortably
  • Drinks fluids
  • Is urinating
  • Has normal skin color
  • Has periods of better energy
  • Has no emergency warning signs
🏠 What Parents Can Do at Home
  • Offer fluids often.
  • Let your child rest.
  • Dress your child comfortably.
  • Watch urine output.
  • Monitor breathing and alertness.
  • Use fever medicine for comfort when appropriate.
  • Watch for new or worsening symptoms.

Avoid ice baths and alcohol rubs. The goal is comfort, not forcing the temperature back to 98.6°F.

Should I Give Fever Medicine?

Fever medicine can improve comfort. It should never delay emergency care.

Acetaminophen or ibuprofen may be appropriate depending on your child's age and health.

Do not use ibuprofen in a baby younger than 6 months unless your child's doctor tells you to.

Frequently Asked Questions

Can my child have 103°F and still be okay?

Yes. Some common infections cause temperatures around 103°F. Breathing, hydration, alertness and other symptoms help determine how urgent the situation is.

Should I go to the ER if fever medicine does not work?

Not just because the temperature stays above normal. Fever medicine is mainly used for comfort. Seek care based on your child's symptoms and overall condition.

Is sleeping with a fever dangerous?

Sleeping during an illness is common. The warning sign is being unusually hard to wake or not responding normally when awake.

The Bottom Line

Most childhood fevers do not require an emergency room visit.

Go to the ER when fever occurs with serious problems involving breathing, alertness, hydration or other major warning signs.

And remember the important exception: a baby under 3 months with 100.4°F (38°C) or higher needs prompt ER evaluation.

References & Medical Sources

Related Parent Resources

Find more guidance about childhood fever and illness in our Fever & Illness Library →

Medical Disclaimer

This article provides general education. It does not replace care from your child's pediatrician. Seek medical care for concerning or worsening symptoms. Call 911 for a medical emergency.

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