Sorry to hear that. I do know what you are dealing with. I would be surprised if your husband's phases of good speech don't seem like divine intervention, even if there is a physiological explanation. That's how it is with this person. I can only say that for her I personally am convinced that God had a reason for keeping her alive and that her brief unexplained periods of remission are his way of encouraging us to persevere during the relapses. I suppose you need to believe in God in order to see it this way though. Has your husband been affected in other ways, like muscular weakness for example?
My husband has half a working brain, is epileptic, although the meds have kept the seizures at bay for about 7 years. He is blind to all intents and purposes in his right eye. His right side is fairly insensitive, he once walked few yards with a putty knife in his wellington before he realised it felt a bit strange.
He can take himself off for his daily walks on his own, and walk quite a distance, much further and faster than arthritic me.
Brain damage is a very weird thing, my husband can do really complicated graphs on the computer, but couldn't compose, or send an e-mail. He can understand written instructions and put flat pack furniture together for instance, something at which I am hopeless, but if I ask him for say a knife, fork or spoon from the drawer, I can get anything but what I have asked him for. He can give me directions if I am driving, I am useless at giving directions, but he can't explain something simple like where he has put an item I am in need of.
Of course as a academic this is highly frustrating for him. He finds it very hard to accept that little me, who is not nearly as intelligent as him and our three girls, occasionally knows best, especially where his health is concerned. I do feel sorry for him, but on no account will I treat him any differently to the way I would have done before his illness, as he would hate that. I tell him like it is even though it doesn't always make me popular.
Added to his other problems he has a dodgy prostrate, the jury has been out since 2004 as to whether he has prostate cancer, his PSA is always very high. He has also developed what we are told is a benign tremor, but I am concerned it could be Parkinson's Disease, which killed his mother!
However, we have three wonderful girls who look out for us, so we are very grateful indeed as there are so many people much worse off than us.
Sorry to ramble on!