![]() ![]() But a large group of patients can present as normal, but still need a lot of rest and recovery. Yong says a small percentage of people spontaneously go back to normal - or experience severe brain fog. It’s still unclear how brain fog recovery works. He adds that COVID can damage blood vessels, thus reducing the supply of blood - and oxygen and fuel - to the brain. That can cause the destruction of normally-functioning neurons in brain areas such as the hippocampus, which plays a role in memory consolidation. Why does this happen? Yong says some researchers have found that COVID infections can move inflammatory chemicals from the lungs to the brain. While brain fog and executive dysfunction aren’t new, Yong points out that similar symptoms are found in people undergoing chemotherapy, those with traumatic brain injuries, as well as people experiencing mild cases of encephalomyelitis or fibromyalgia. And then it's very hard to retrieve that information when you need it, which manifests as problems of memory.” “It's really hard to focus on what kinds of information you should store. They also struggle with short-term memory. ![]() Others can’t read anymore because they can’t string together the meaning of sequential words. Yong says some people with brain fog have lost the ability to drive because they forget where they’re headed. All of that is so foundational, that if you lose them, a lot of really basic things planning, multitasking, concentration become almost absurdly impossible.” “It affects executive function, which is the term for skills including focusing attention, blocking out distractions, and holding information in mind. These long-term ailments include brain fog, which is one of the worst and most misunderstood symptoms, according to The Atlantic science writer Ed Yong. People are still struggling with recurrent respiratory, cardiac, and cognitive issues after their COVID infections. ![]()
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