“Brain fog” and other neurological problems linked to immune activation, inflammation and blood vessel damage.
Even after the SARS CoV-2 virus has been subdued, the immune system can’t calm down.
Nervous system problems are among the constellation of diverse symptoms reported by people with Long COVID, a poorly defined syndrome that affects between 7% and 18% of people after infection. Some appear at the same time as respiratory symptoms; others emerge, on average, two weeks later. But they can persist for months.
Certain things can go wrong, especially if very small amounts of the virus get into the central nervous system or brain, he said. Inflammation is the cause behind other COVID-related medical crises. For instance, children can develop a multisystem inflammatory syndrome. In elders, sudden inflammation of the lungs, called a “cytokine storm,” can be lethal.
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