It happens most strongly when I go to bed , but it sometimes happens at other times. The sense that there’s a presence here. During the daytime it’s this sense that someone or something is lurking behind me . At night in bed I can know no one is behind me because the bed is against the wall but I have this feeling someone is going to come into the bedroom.
I’m struggling to see this as a delusion as I can reality test things but it’s just that the feeling is very persistent.