Mywill Grogan dedicated at his 9th grade biological exercise.

I don't know what people are talking about, Will said.

This situation, which happened earlier this year, was one of many disturbances that happened to Will Grogan, 15, after I was infected with NCOV last October, besides other issues like often tired and painful

Will Grogan at his home study in Dallas.

While teenagers across the United States are preparing to return to school, many students have struggled with nervous, physical and mental sequelas for Covid-19 with the level and time

Covid-19 estimated studies may affect 10-30% of adult patients with virus infections.

At a US Congress hearing in April, Dr. Francis Collins, Director of the National Institute of Health, led a study showed that 11-15% of teenagers with Covid-19 could suffer

Doctors say even NCOV infected children have mild symptoms or without symptoms that face the risk of long-term claws.

Potential impact is huge, Dr. Avindra Nath, Head of Neurological Institute at Neurology and Stroke, said.

Will is a talented tennis player, a dynamic, smart student, who loves language learning to the point where I choose at the same time in French and Arab.

The boy who said nap is a waste of sunshine.

When returning to school in Dallas, the brain fog, a form of cognitive dysfunction, causing Will to see the numbers away from the Math book page, forget to submit historical essays about Japanese samurai that I write

This is really scary, Will shared.

According to American Pediatric Academy, nearly 4.2 million teenagers have made Covid-19.

According to Dr. Molly Wilson-Murphy, a specialist of neurological infectious diseases at Boston Children's Hospital, most patients were children with Covid-19 but were not hospitalized, self-recovery at home then encountered symptoms

Dr. Amanda Morrow, co-director of Hau Covid-19 Pediatric Clinic at the Kennedy Krieger Institute in Baltimore, said early treatment can help them recover well, but need the intervention of many experts and other methods

We don't have any accurate predictions about who will be susceptible to sequelae, where the level of influence and the recovery process is, Dr. Wilson-Murphy said.

Most information about Covid-19's long-term claws are still vague.

Some patients appear a tachycardia syndrome in a standing position (Pots) that stunned them and the heart rate increased every time he switched from sitting or lying to stand.

Many doctors met the teenagers with Covid-19 sequelae that had problems with migraine or anxiety, but it was not clear whether they had any relationship.

Before the translation, Sierra Trudeau was diagnosed with anxiety after his parents divorced.

Sierra Trudeau in a doctor's examination of post-Covid-19 syndrome.

In an interview in the spring, Sierra, 12 years old, and my mother said she was often tired, headache, or forgot a few other symptoms.

Do you feel anxious and my mental health, such as emotions, are worse?, Heather asks.

Yes, she answered.

Anything can make her cry and this is not my child every day, Heather said.

An optimistic sign with Sierra is the sense of smell and her taste has returned to the spring.

At the end of last month, Sierra's mother said the symptoms were improved, partly due to a new antidepressant and anti-anxiety drugs.

God, why I was always sick, Messiah Rodriguez, 17, wondered.

As a positive member of the school basketball team, Messiah had to leave playing after having to run out of the yard and vomited into his backpack in two matches.

I have never encountered something like that.

Messiah is one of the most affected children I met, Dr. Alexandra Yonts from the National Children's Hospital in Washington said.

Messiah Rodriguez, 17, has Covid-19 literacy both physically and mentally.

Messiah also appeared post-Covid-19 mental health problems.

It is like social anxiety syndrome, Messiah said.

Messiah is diagnosed with behavioral adjustment disorder, a condition that is as described by Dr. Yonts, it makes him depressed, anxious or encountered other mental problems when facing great events

8 months after treatment, some symptoms of Messiah have relieved.

In classes at school, Messiah, an excellent student, describing him feeling like his mind always came to another place.

In a June appointment at the National Children's Hospital, the Abigail Bosk Little Specialist said the status of Messiah is more likely to be a common fatigue.

Messiah currently maintains at least two hobbies as piano and poetry.

With Will Grogan, teenagers from Dallas, I and my family still feel confused.

Everything was confusing, it was the helpless feeling of parents, Whiney Grogan, Will's mother, sharing.

With some difficulties and tests that are reduced, Will can still maintain high scores.

I often miss the ball, Will said.

Will's left breasts and legs were hurt made me looking to Dr. Kathleen Bell, Head of Physical Medicine and functional recovery at the Southwestern University of Texas University.

Finally, Will can play.

I'm not a mushy boy, but everything happened, turned me into a person or worry, Will said.