KNOWS ME BUT CAN'T SAY MY NAME

My friend of 20 years was admitted to the hospital yesterday. He is 50 years old but as if we knew each other all our lives. We are close on a first name basis. But yesterday, he cannot say my name. He just stares at me and would mumble that he is good; he can take this and many other words people who do not know each other say when they meet after a nod and a hello. On CATSCAN, nothing was wrong with his brain nor did he have any sign of paralysis signifying that he had a stroke. His family was so worried that he cannot even say the names of his children and wife. But if you keep pestering him to recognize you, he gets angry meaning he knows us but cannot just say our names. APHASIA is the term for this.
Together with a neurologist  we started brain medications. 6 hours after, he cannot move his right  arm and right leg. STROKE. I saw him at an earlier stage. Well, we cannot do anything else but physiotherapy. He was a chain smoker, fat and always stressed out.