Doctors have found a physical cause for the so-called brain fog in Long Covid patients. The viral infection causes a disruption of the blood supply system in the brain.
The blood vessels become more permeable and are less able to protect the brain from pathogens, toxins and other substances in the blood. The results are likely to change the way we understand and treat post-viral neurological diseases, say the researchers from Trinity College Dublin. According to estimates, around ten percent of those affected struggle with long-term consequences of corona.