My dad is 84 and has dementia although he was never diagnosed. He stayed with me for 7 weeks recently, his short term memory is very poor. Long term memory is good. I just took him back home in May and his wife placed him in a home. I called his care manager who said he is very anxious and they are giving him meds for it. She said he threw poop in his room. Why? He never showed such behavior while with me and my family for 7 weeks.