I'm sorry, Pingu.
The worst thing about my mam's Alzheimer's is her aggression, which we have been dealing with for maybe about a year now. It's very difficult, she seems angry all the time; there is absolutely no pacifying her, even saying something totally innocuous, or even paying her a compliment just results in a vehement "Oh shut up, get out!" Or a "B****r off out of this house!" Alternatively she just won't acknowledge that I've spoken to her. It's awful, when all I want to do is give her a cuddle. But she's simply off limits to that at the moment.
But ... Please don't despair. Not everyone with Alzheimer's or other dementias will become like this. There are plenty of people on TP whose relatives with dementia are placid and easy going. Aggression is by no means inevitable. We have just been unlucky in this respect, and we hope that it will be a phase that she will come through, or that her medication will eventually help. And to be perfectly honest, although my mam had many very fine qualities, she has always been a bit prickly and difficult to please, has always been a bit tactless and convinced that she was never wrong. The Alzheimer's has just greatly exaggerated these characteristics and brought them to the fore so that now these are her main traits, and the previously greater nice, kind, funny and caring aspects of her personality are hidden, and only surface occasionally. But I know that they are still there, somewhere, and I always hope that one day they will overcome the nasty side and my mam's true personality will return.
I'm sorry to have depressed you, and would hate for you to think that the problems that we're dealing with will eventually happen to you to, because everyone is different, and you may never encounter this particular problem.
xx