January 17, 2026

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Catching 9 Early Flu Symptoms in Children

Catching 9 Early Flu Symptoms in Children

Early flu symptoms in children often include body aches, headache, sore throat, cough, and a runny nose. Unlike cold symptoms, which usually develop slowly, flu symptoms tend to come on suddenly—sometimes within just a few hours—and are typically more intense.

Most children recover from the flu without medical treatment. However, contact a healthcare provider if your child has trouble breathing, doesn’t improve with home care, or shows concerning symptoms like confusion or a fever that doesn’t respond to medication.

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1. Fever

Children often get higher fevers than adults when they have the flu. It’s common for kids with the flu to have a fever between 103°F and 105°F.

This can sound scary, but a high fever isn’t always dangerous on its own. If your child still seems alert, drinks fluids, and feels a bit better after taking medicine like acetaminophen (Tylenol) or ibuprofen (Motrin), that’s usually a good sign.

Never give aspirin to a child with a fever, as it can cause a serious health condition called Reye’s syndrome that can cause swelling in the liver and brain. If the child’s fever doesn’t go down with medicine, contact your child’s healthcare provider.

2. Body Aches

Body aches are commonly an early flu symptom in children and they can be pretty strong. Since younger kids may not know how to describe it, they might just say things like “I don’t feel good” or “everything hurts.” If they also have other flu symptoms like a fever or cough, body aches are likely part of it too.

You can give acetaminophen to help ease their pain and reduce fever. A cool compress on achy muscles may also help.

3. Cough

Coughing is a common early flu symptom in both kids and adults. It might sound dry or more wet and chesty. If your child’s cough is loud, painful, or keeps them up at night, it can be especially uncomfortable.

You can help ease their symptoms by using a cool-mist humidifier, keeping them well hydrated, and giving age-appropriate medicine if their healthcare provider recommends it.

Call your child’s healthcare provider if their cough is getting worse, if they’re wheezing or making a whistling sound when breathing, or if they seem to be working hard to breathe.

4. Congestion

Congestion is often one of the earliest flu symptoms in children. When mucus builds up and doesn’t drain well, it can lead to ear infections or sinus infections—especially in younger children.

To help relieve congestion and prevent complications:

  • Run a cool mist humidifier in your child’s room.
  • Encourage them to drink lots of sugar-free fluids to thin mucus.
  • Have them blow their nose often.
  • For younger children, try using a gentle saline nasal spray or bulb syringe to gently clear their nose.

If your child seems to be in pain around their ears or face, or their congestion doesn’t improve after several days, contact their healthcare provider.

5. Headache

Headaches are a common flu symptom, even in young children who don’t usually get them. While older kids might say, “My head hurts,” younger children may just act more irritable, cry, or tug on their ears.

You can help ease the discomfort with acetaminophen or ibuprofen, as long as it’s the correct dose for their age and weight. If the headache is very severe, lasts a long time, or comes with other worrisome symptoms like vomiting or confusion, contact their healthcare provider.

6. Sore Throat

Sore throats are common with the flu and can make kids feel pretty uncomfortable. While strep throat is often the first thing parents think of, the sore throat from the flu is usually less intense. It typically doesn’t cause extreme pain or make swallowing very difficult, but it can still be bothersome.

If you’re not sure whether your child’s sore throat is due to the flu or something else like strep, it’s a good idea to visit their healthcare provider for a quick test. In the meantime, warm drinks, cool treats like ice pops, and age-appropriate pain relievers can help ease the discomfort.

7. Vomiting and Diarrhea

Vomiting and diarrhea aren’t classic flu symptoms for adults, but kids can have them when they get the flu. This sometimes makes it hard to tell the difference between the flu and a stomach bug. One clue is that the flu usually causes other symptoms too—like a cough, fever, or stuffy nose—while a stomach virus tends to only cause vomiting, diarrhea, and fever.

If your child has vomiting and diarrhea along with typical flu symptoms, it’s likely from the flu. Make sure they drink plenty of fluids to stay hydrated, and contact a healthcare provider if they can’t keep anything down or seem weak or dizzy.

8. Ear Pain

Ear pain can happen with the flu, even if your child doesn’t have an ear infection. This is usually due to mucus buildup in the sinuses, which can create pressure that’s felt in the ears. Some kids may say their ears hurt, while others might just seem fussy or uncomfortable.

If your child’s ear pain sticks around or gets worse, they might have an ear infection—a common complication of the flu. Many ear infections get better on their own, but it’s a good idea to check in with your child’s healthcare provider if you’re concerned or if the pain is severe.

9. Loss of Appetite or Decreased Energy

When kids are sick, they often don’t feel like eating much, and the flu is no exception. If your child is too young to tell you what’s wrong, a decrease in appetite might be one of the first signs they’re feeling sick. You may also notice that they seem more tired than usual and don’t eat well, even before other flu symptoms show up.

If you see that your child isn’t eating as much and is less active than usual, keep an eye out for other flu symptoms. If you’re concerned or if your child is under five years old, contact their healthcare provider. Young children are at a higher risk for serious complications from the flu and may benefit from antiviral medications if symptoms are caught early enough.

Cold vs. Flu Symptoms

Cold and flu symptoms can seem similar, but there are key differences that can help you figure out what your child is dealing with.

Symptom Cold Flu
Onset  Gradual (over a few days) Sudden (within hours)
Fever  Rare or low-grade Common and can be high
Body aches Mild Common and often severe
Fatigue  Mild Moderate to severe; can last for weeks
Cough Mild to moderate Common and often dry or severe
Sore throat Common Common
Runny/stuffy nose Common Sometimes
Headache  Rare Common
Chills  Uncommon Common
Duration 7 to 10 days 1 to 2 weeks or more

When to See a Healthcare Provider

Many flu symptoms can be treated at home, but there are times when your child needs medical attention. Contact your child’s healthcare provider if their symptoms don’t improve with medication, last more than a few days, or seem to get worse.

Also, see a healthcare provider if your child develops:

  • Trouble breathing or wheezing
  • High fever (103°F or higher) that doesn’t get better with medicine
  • Severe or lasting pain
  • Chest pain
  • Weak legs or feet
  • Red urine (bloody urine)
  • Unusual confusion, tiredness, or trouble waking up
  • Signs of dehydration like dry mouth or not peeing often
  • Continuous vomiting or diarrhea that stops your child from drinking fluids

Don’t hesitate to contact a healthcare provider if you’re concerned about your child’s symptoms.

Summary

Early flu symptoms in children include fever, body aches, sore throat, cough, and congestion. These symptoms can appear suddenly and are often more intense than those of a common cold. If your child experiences severe symptoms like difficulty breathing, persistent pain, or confusion, seek medical attention right away.

While most children recover from the flu, those under age 5 are at higher risk for complications and should be closely monitored.

Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.

By Kristina Herndon, RN

Kristina Herndon, BSN, RN, CPN, has been working in healthcare since 2002. She specializes in pediatrics and disease and infection prevention.  

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