My dad is 81 and forgets things. We think he has dementia/alz and maybe parkinson's or something similar. He is wobbly when standing, moves very slowly and therefore, soils himself because he can't get to the bathroom in time. He has seen spirits in the house, has talked about my mother as if she were still alive, accused me of asking him for money to buy my daughter curtains, and thought the phone company was out to get him so he went to my middle sister's house to use her phone. My youngest sister has MS and can't remember things and lives with my dad. She will go to a fast food place and get lost. We think her MS is affecting her brain. The issue is this, she does not take care of the house, it is filthy and falling down around them. She won't shower for a week or more and generally doesn't get out of her pajamas. She doesn't cook for my dad, she gets fast food and my dad has gained weight. When my dad is invited to do anything, it is only if my sister wants to do it. Any time we ask him if he is going to go somewhere, like church, he says he doesn't know, my sister will then chime in with "no" and then my dad says no. He doesn't do anything without checking with her. He missed being with the family for Christmas because she didn't want to leave the house. She doesn't do his laundry unless he has an accident and asks for her help. There are times he has tried to clean up himself and left soiled clothes and used toilet paper laying in his room (and it smells). He has even put on soiled clothes thinking they were clean. Also, he sleeps with soiled blankets. Basically, the two of them sit in front of the TV all day long every day. To bring up a power of attorney or anything like this will cause my dad to get angry as my brother has already tried. I am not sure what we should do or when. Both my brother and middle siter are waffelers so if anything is to get done, it will be up to me. I am open to guidance and suggestions.