Sometimes it's hard to remember that this behaviour isn't the behaviour of your parent, IF and it's a big IF when you are guessing their diagnosis they have dementia you HAVE to realise it os the disease doing these things and not the person.
The verbal and physical aggression, the made up memories can all be part of it do unfortunately you have to go along with it. Snatching things from hands will only make the situation worse. Just leave them to get on with it, they don't mean it at all.
Those who have a diagnosis will understand this, those who don't, we'll a bit more compassion and thought for the person who may suffering is in order I'm afraid.
