I don't know what to do. Dad has suddenly become extremely confused and also seems to be hallucinating. We spent all night trying to convice him that he wasn't in a strange hotel room and later on that he mustn't go out to "catch a train". This morning he doesn't seem to recognise us, keeps looking and calling for his dead father and sits in the chair twitching and trying to pick things up that aren't there. He does seem to have lucid periods, but this is very worrying. We have never had anything like this before, it seems so very sudden. This morning was his first day on an extra Exelon tablet, don't know if that is anything to do with it. I am at my wits end and I don't know who to contact or where to go for help. Should I try to contact the CPN, or call Social Services as an emergency, or what do I do? HELP!!!!