In the movie a beautiful mind, john nash believed that the newspaper he was reading had a secret message hidden in it just for him. what type of delusion would this be called?

It is called delusions of reference. It is portray the marvel of a person's encountering harmless occasions or insignificant occurrences and trusting they have solid individual essentialness. It is "the idea that all that one sees on the planet identifies with one's own particular predetermination".