Mom, 92, has vascular dementia, on the whole is pretty good, some mild occasional confusion but nothing alarming. She has been sleeping through the night until three nights ago. She started talking to people who she was seeing in her room, getting out of bed and walking around, and was very disoriented in the morning, didn't know me or family relationships. It sort of cleared up during the day, but that evening she "saw" people sitting on her couch. The past few nights she's been awake (?) for several hours talking to people she sees, and sometimes it is frightening to her (she thought a man was trying to hurt her last night). I turn the lights on and try to reorient her, and it works briefly but then the talking starts up again. Her eyes are open and she seems to be looking at whomever she is talking to. She remembers this in the morning and thinks things really happened. The visiting nurse says she is sundowning. I've read what I can about it, and have a few questions. Is this going to be a permanent thing? Does it come and go, or do I have middle of the night sleep interruptions to look forward to indefinitely? I didn't see anything where medications would help with this, is this true? Anybody have experience with this?