My father was diagnosed with PD three years ago although I had been noticing changes for years. He is 81. Up until recently he was having a descent quality of life. His mental capacity has diminished greatly these past 3 weeks. He has an acute awareness of what is happening to him. He is afraid and full of anxiety. What can I do for him? He forgets what I tell him or remembers bits and pieces. I want to do what I can to give him the best quality of life but I don't know what else to expect from PD. I am angry at the disease and emotional. I need help trying to figure out what else i can do for him?