![]() ![]() It can cause difficulty concentrating, memory issues, and a sense of mental sluggishness. Approximately 28% of them reported having trouble concentrating, and 34% reported problems with memory.īrain fog is a common symptom of COVID-19 and can last for several weeks or even months after recovery. ![]() Another larger 2021 study found that symptoms continued for an average of 7.6 months.Ī 2020 study examined lingering symptoms in people hospitalized for COVID-19 100 days after they were discharged. In a 2020 study, 55% of people who recovered from COVID-19 reported neurological symptoms lasting 3 months post-infection. Mild cases saw brain fog symptoms lasting around 2 weeks after recovery, while more critical cases saw symptoms beyond 6 weeks. Studies suggest its effects can last for weeks or even months after recovering from COVID-19.Ī 2021 study found that the length of long COVID-related brain fog might depend on the severity of a person’s COVID-19 symptoms. For others, they can continue for far longer.īrain fog is often associated with long COVID syndrome. For some people, symptoms might fade shortly after recovering from COVID-19. ![]() Vascular endothelial growth factor markers were also higher in these people, with some measures specific to people who experienced cognitive changes soon after being infected.The duration of brain fog varies. People with persistent cognitive problems after mild COVID-19 had higher levels of two inflammatory markers in their spinal fluid - C-reactive protein and serum amyloid A - compared with those who had COVID-19 and no cognitive symptoms, Hellmuth and co-authors reported. ![]() Joanna Hellmuth, of the University of California, San Francisco, found an "inflammatory signature" in the cerebrospinal fluid of 13 people who had lingering cognitive problems 10 months after they had their first COVID-19 symptoms. In preliminary work that will be presented at the American Academy of Neurology annual meeting, researchers led by Dr. New research published Friday suggests that an over-stimulated immune system - possibly triggered by ongoing vascular injury and repair - may be behind persistent post-COVID cognitive changes. ![]()
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