Set in present-day United States
I have heard this theory that you can only dream of what you know. That nothing in your dream is something that you haven't seen before. Is this true?
My character is having nightmares almost every night of being chased down a long hallway (a psychiatric hospital) and in this story, he doesn't know that he's been to this hospital before. I wanted his psych to make the "dream of what you know" argument, but if there is no truth to that, then my story can still work without.
More info on the story: My character is a patient at the hospital, although he doesn't know it. He's suffering from severe psychosis and it's causing him to create this new world where he isn't in the hospital. His dreams represent his reality. Make sense?
Google Search: Do you only dream of what you know?, Dreams, Dreaming and real life