My father has vascular dementia and possibly Alzheimer's along with other health issues. He has been in a nursing home for just over a year. I find it remarkable that he can appear at times as if he doesn't have dementia and is also a lot friendlier and happier than ever before in his life (as far as I know of course). He is still quiet with me but not with some of the carers in the Home. Am I missing something or is this normal with dementia?