Long COVID can be tough to diagnose in children, but there are a number of things to look for. “Many children don’t have any symptoms when they have a COVID infection,” said Dr. Sindhu Mohandas, a pediatric infectious disease specialist and attending physician at Children’s Hospital Los Angeles. “So if the symptoms of long COVID appear later, it can be difficult to link them to the coronavirus.” There is no simple nasal swab or other diagnostic test for long COVID. Instead, doctors have to assess a child’s pattern of symptoms and past exposure to the virus. Symptoms can vary widely from patient to patient, but in kids, the most common long COVID symptoms are unusual tiredness/fatigue, headaches and difficulty concentrating (brain fog). 
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