Hello my dad is not doing very well mentally. I am very worried about him. He has always been a wonderful,caring, and selfless man. He did have issues in the past but nothing we could not get through. Last few years he has become distant,giving dirty look,mentally abusive,selfish,and vain. He also acts like two different people. He will say something and then a minut later he says something else. He is hot then cold and then back and forth. He was fine ten years ago but now he has turned into a cold hearted monster. I know he has depression,narcissism and sleep apnea. I know it can cause a lot of things, but he seems to have every psychological disorder in the book. What should I do?