Photomicrograph showing amyloid beta protein (brown from staining) in tissue taken from a human brain. Johns Hopkins Medicine researchers have shown that.
Brain fog has taken the forms of short-term memory loss, confusion and difficulty concentrating. Some people also have experienced psychosis or delirium.
The symptom has become so commonly associated with coronavirus patients that it s sometimes referred to as COVID brain. The medical term for it is encephalopathy.
The cause of this lingering symptom is becoming more clear thanks to two small studies.
One study suggests brain fog may result from megakaryocytes a large type of cell blocking blood and oxygen from passing to the brain, a location where they typically are not found. To have megakaryocytes in the brain has never been seen before, Dr. David Nauen, a pathologist at John Hopkins University who led the study, told ABC News. I couldn t find any reference in my search this past summer with megakaryocytes noted in human brain capillaries. This is very new for COVID that they are doing this.
Scientists inch closer to explaining the mysterious brain fog symptom of COVID-19
• 6 min read
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As larger numbers of people recover from COVID-19, researchers are learning more about brain fog in those affected by the virus.
For months, doctors and researchers have been aware of a range of longer-term symptoms afflicting people after recovering from an active COVID-19 infection. One such symptom, generally referred to as brain fog, can take the shape of confusion, difficulty thinking and concentrating, short-term memory loss, and in severe cases, has even been reported to cause delirium and psychosis.
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