What is softening of the brain?

What kind of disease is encephalopathy? Until now, I thought they were just said to have softened the brain, but now an acquaintance of mine has gotten this kind of disease.
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Answer :

Softening of the brain occurs when a certain area of ​​the brain does not receive blood properly, which changes its composition and softens its structure. Unfortunately, softening of the brain is not curable because, according to the current state of medicine, we are not able to repair the tissues of the brain. On the other hand, they have achieved good results in the treatment of the disease because they are able to take over the role of already dead tissues from other brain tissues in a healthy area.   
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