I ask him to always let me know when he has to get up to go to the bathroom, just usually in the morning, he can walk slowly with a walker but does not get around good, might fall. I will leave the room just after he tells me he is okay, (uses urine bottle by the bed only gets up for #2) immediately after I leave the room, I hear him banging around trying to get to the bathroom, when I ask him why he didn't call me, he just stares at me like he doesn't want to respond or doesn't know what I am talking about? Is that dementia, what stages, he just started doing this. Also, just stares at the TV not really watching it but flipping it a lot. Sleeping and not eating saying his mouth is hurting and he can't chew. He always has excuses, seems very defensive about what I ask him?