My husband's step dad was very sick after my husband's mom died. He came to stay with us for a while until he was doing things like getting up in the middle of the night and rolling leaves in napkins trying to smoke them. It was dangerous because he almost caught things on fire a couple of times. And he tinkled everywhere! One day he told me, "It rained in my room!" Of course, me....I laughed! I said, "Well, we better get things dry before it rains again!" It still cracks me up to think of him telling me that! LOL! I also had small runners in the hallways that he would walk around because he thought they were graves. He did things repetitively so I went to the craft store and bought a little wooden rocking horse for him to sand on for one of his grandkids. We would sit on the back deck and sand on that horse for hours. But he had diabetes which could not be controlled and as carefully as we watched him we could not keep his blood sugar level so he had to go into a skilled nursing facility. They could not stabilize him either but at least they were able to watch him 24 hrs and deal with the extreme high and extreme low blood sugars. He and my mom are the only ones who had long term difficulties with memory and thinking. The others all had fairly short term devastating illnesses and we would go to their homes or the hospital to sit with them or take care of whatever they needed done. It's not easy no matter.