I learned the hard way not to argue I simply say everyone left for the day I also ask if we can talk about going home in the morning since I can not drive at night he usually forgets anyway and if not maybe you can take him for a walk or a drive to his house that is if he is still ambulatory

When the gentle truth doesn't work I thank him for protecting us, tell him he takes such good care of me, etc. The root cause of his anxiety is always him wanting to take care of me. When he feels I am "ok" he does better. His dreams are so real to him, most mornings we've been on a trip somewhere or must go.....no perfect answer. Sometimes it lingers all day others it will subside after a bit.
Blessings.

Kathy3 is right. It is best to play along with whatever the scenario is at the time. If he really feels someone else is there, can you say it is a cleaning lady, or a health aide or a friend, etc? Someone that is non threatening to him. I am caring for my husband now but my mom also had Alz. We had some of the most outlandish conversations because I kept going along with her. However, it kept her calm.

I wish you a day filled with Light, Love and Laughter.

My ,sometimes it is so real that they do the same things . My husband wants to know where everyone has gone. Wants to know when are we leaving to go home. He has been asking about were his parents are I tell him they have passed away. I tell the truth most of the time. Sometimes I have no answers. Sometimes he want to argue and then I just quit talking to him. I have just left the room. Hugs

We have another couple living in our house too. Sometimes DH gets upset that they go out without telling us, tells me to be quiet so I don’t disturb them, worries if they have a key to get in, accuses them of stealing from him. Won’t believe me when I tell him that it’s only us living here. This is a recent obsession and has mostly replaced the invisible children who used to be here. So maybe it too will be temporary.