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Long-Haul COVID-19 in Children and Teens

By: Peter Rowe, MD, FAAP

Most kids and teens who test positive for COVID-19 have mild, or even no, symptoms. But it has become clear that some are experiencing symptoms more than a month after they’ve been infected with SARS-CoV-2, the virus that causes COVID-19.

A number of post-COVID conditions have been identified in kids. Most notable are continued or recurring symptoms referred to as “long-haul COVID,” or sometimes as “long COVID” or “Post-Acute COVID-19.” Research on this condition continues.

Who gets long-haul COVID?

No one is certain exactly how many people who’ve had COVID-19 end up being long haulers. One study showed that as many as 52% of teens and young adults between ages 16 and 30 may experience lingering symptoms 6 months after having COVID. The U.K. Office for National Statistics estimated that 12.9% of children 2 to 11 years of age, and 14.5% of children 12 to 16 years old, still experienced symptoms 5 weeks after infection.

What experts do know is that long-haul COVID can happen even in people who had mild or no symptoms of COVID-19. The symptoms they had during the acute infection may not go away, even long after their infection is gone. Sometimes, long-haul COVID symptoms start after a person is feeling better. Or, if they were asymptomatic (didn’t have COVID symptoms), they may experience them weeks later. Any of these symptoms can be new and different, or they may be the same as the ones your child had during the COVID infection.

What are symptoms of long-haul COVID?

The most common symptoms of long-haul COVID include:

  1. Fatigue and poor physical endurance

  2. Difficulty thinking or concentrating, also known as “brain fog”

  3. Cough

  4. Trouble breathing

  5. Joint or muscle pain

  6. Chest or stomach pain

  7. Mood changes

  8. Headache

  9. Fever

  10. Heart palpitations

  11. Loss of or changes in smell or taste

  12. Lightheadedness when standing up

There are a variety of chronic symptoms your child can experience after having COVID-19. The specific symptoms your child has could depend on how severe their COVID infection was. For instance, if your child was in the intensive care unit (ICU) on a ventilator, they might have fatigue and weak muscles, as well as a fast heart rate and brain fog. These are common effects in people who have spent time in the ICU.

How is long-haul COVID diagnosed?

There’s no specific test to diagnose long-haul COVID, so it’s diagnosed based on symptoms. Your pediatrician may run other tests or refer you to a pediatric sub-specialist, especially if symptoms continue for more than 3 months. They will want to be certain there’s nothing else causing your child’s symptoms.

How long does it last?

That’s still unknown. More studies are needed to understand what’s going on.

What causes it?

Researchers are still trying to figure out what causes some people to experience long-haul COVID. It will probably take some years before we know much.

How is it treated?

Treatment depends on what symptoms your child is having. Your pediatrician will treat individual symptoms, such as headaches, lightheadedness, or problems sleeping.

What about multisystem inflammatory syndrome in children (MIS-C)?

You may have heard of multisystem inflammatory syndrome in children (MIS-C), a serious condition that may be related to COVID-19. However, doctors don’t know for sure yet what causes MIS-C. They just know that many kids who have had it either had COVID-19 or were around someone else who did. Keep in mind that MIS-C is rare.

When to seek help

If your child has been infected with SARS-CoV-2, stay in touch with your Kids First Pediatrics provider to monitor for any lingering symptoms. Many medical centers in the United States are creating post-COVID care clinics so they can treat long-haul COVID more effectively. We can help you find a subspecialist or clinic if your child needs one.


COVID-19 vaccines are the best way to protect your family against COVID-19 and post-COVID conditions, including long-haul COVID. Vaccines are currently available for anyone 5 years of age and older. Clinical trials are underway for children as young as 6 months old.

Kids First Pediatrics of Raleigh provides COVID-19 vaccines for our patients every 3 weeks on Saturday! Call us at 919-250-3478 to schedule your child’s appointment.

More information

*This article is informational but is not a substitute for medical attention or information from your provider.


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