My father has been suffering from mild dementia for a year or so and so far it's been manageable. But my mother (who also suffered from dementia) recently passed and my dad's dementia has gotten significantly worse since then. I think he has "sundowning syndrome," because it always seems to get particularly bad at night. He mainly hallucinates that there are lots of strangers in the house..He thinks that some of them are trying to steal his musical instruments (he's a retired musician). At night I'll hear him talking to people who aren't there. He wakes me up several times during the night asking me if I see them, or asking me to get rid of them. He's also constantly rummaging through his things at night; I'll leave everything tidy when I go to bed and wake up to find things scattered all over the floor. Twice over the weekend he called the police, so I'm now hiding the phone from him. I'm not quite sure what to say, so i just try to make him feel calm as best as I can, but I'm starting to really lose sleep. I talked to his doctor about it who prescribed Quetiapine for him, but the side effects sedated him to the point where he couldn't even stand up by himself, so I stopped giving it to him (he was only on it for three days). It's just so hard dealing with my mom's death and now having to deal with this, too and I know it's going to get worse as times goes on, as it did with my mother. Any advice from people who've experienced this as well?