Worried, my guy too has dementia, as Emma has said all those things can happen. However, there were times before diagnosis, that he "checked out" Like Emma's mom, we think it was just stress, almost like a psychological overload. However, working in an ALF's i came to find there were many different faces of dementia. Also, reading up on dementia and reading some doctors papers on it one doctor compared a particular type of dementia as "deer in the headlights". They just go away for periods of time. I found that interesting as i never thought of it in that manner, but have observed it in the Alf's.|
Due to the fact my guy is younger, i did a lot of research on dementia and found many articles about possible restoration of the mind. There are things we have been doing to try and stimulate the brain, some on purpose and some not. His last visit he did better on his MMSE test and the doc was impressed. He still gets confused, doesn't know what day/month it is unless like now in this holiday season. Learning new things takes him a long long time, but he usually gets them. Waiting for him to answer or tell you things he wants, usually ends up in a long dissertation. Communication i think is the big thing with mine. It takes him awhile to come up with the right words. I don't know if you are old enough to know who the comedian Norm Crosby was, but his routine was made up of "mis-speak" words that sort of sounded right, but weren't right. My guy is the king of mis-speak, we joke about it all the time as he thinks it is the right word or that word comes out of his mouth, but it is nowhere near the word he wanted.
In some folks, that stress factor, signals the brain to go into escape mode, and, I'm no medical professional, but i think that is your case, Whether it be related to dementia, or as Emma said depression, it's just a way for the brain to handle overload...it just goes away