My father is 73 years old; he has Parkinson's, Alzheimer's and diabetes. My parents recently moved in with my brother because they couldn't afford to live on their own anymore. My dad is miserable, depressed and has a bad attitude. He is also delusional. He starts fights with my brother and mother for no reason. He wants to move out of the house and get a job. My dad doesn't realize that he can no longer work and that he doesn't have money. Every time we ask him what he plans on doing, he says I don't know. I'm going to get a job. My question is: What can my brother and I do to help him? He won't see a psychiatrist, he refuses to take new medication that might help him with his depression, he won't live in a senior living home. He is mentally abusing my brother and mom. Everyday we're concerned that he is going to leave the house and get lost. What can we do? We have talked to him hundreds of times, and we've tried explaining to him that he can no longer work. My brother and mom try to ignore him when he starts arguing with them but there's only so much they can handle. He keeps asking for his keys, credit cards and ID. What can we do? He lives in Las Vegas.