In the last few months he has become very forgetful and confused, believes that people are entering his house and taking things, he looses his keys wallet and accusing people of stealing them. But when he finds them doesn't think what he has accused people off was wrong. He has become very aggressive towards his daughter (my mother in law) he doesn't listen to her when shes trying to help him, he plays mind games with her, pinches her, walks behind her to scare her, but again doesn't realize his actions are affecting her. She is lost what to do, hence why I've decided to try and seek some help. I am unsure what to do with the situation, he hasn't been tested for anything as he doesn't believes he has a problem, he is also very stubborn and won't tell us anything that the doctors do say when he visits them, he lives alone and drives we are all very worried for his well being but don't know how to help him or what course of action to take. Never had to deal with this before.