I was asked that today. At first he neighing, and then he thought.
In fact, they have already tried to catch the coronavirus in the brain. And it even kind of worked out.
That is, you can dig out a virus from the brain and track how it spoils something there. But this is very, very difficult. If it mattered, the virus would bathe in our cerebrospinal fluid, and it would be found there in exactly the same way as in snot. But usually they don't.
There are too few receptors in the brain for the virus. He has nothing to do there. The virus needs to multiply. This is his main biological task. So in our brain, it is very inconvenient for him to do this.
And on the other hand, covid patients will quickly become weak in their heads, and some began to freak out. Constantly publish stories about some glitches in patients, or how one aunt stopped recognizing her husband and all that.
This is generally called encephalopathy. That is, something has such an effect on the brain that it starts to work poorly. This happens in two thirds of severe covid patients in intensive care.
Someone starts delirious, and they need to be reassured. Someone, on the contrary, "loads" and does not react to anything.
This thing resembles what happens in the head during blood poisoning. Remember when we discussed sepsis and cytokine storms? There cytokines rage throughout the body and even fly into the brain.
The brain has a so-called blood-brain barrier. It does not allow various nasty things to penetrate from the blood into the brain.
And cytokines are able to increase the permeability of the vascular wall. This is necessary so that our immunity has access to all problem areas.
Therefore, during any severe infection, the permeability of the blood vessels in the brain can increase. The blood-brain barrier is broken, and all sorts of nasty stuff gets into the brain. From this, the brain begins to malfunction and delirium. It turns out encephalopathy.
So the covid of the brain is not a hysteria in an impressionable patient and not a virus in the head, but rather encephalopathy due to a general serious condition.
