Underlying cause of 'brain fog' linked with long COVID discovered

Scientists have announced a major discovery that has profound importance for our understanding of brain fog and cognitive decline seen in some patients with Long COVID. The findings showed that there was disruption to the integrity of the blood vessels in the brains of patients suffering from Long COVID and brain fog. This blood vessel 'leakiness' was able to objectively distinguish those patients with brain fog and cognitive decline compared to patients suffering from Long-COVID but not with brain fog.