A 21-yeаr-оld mаn presents tо the оutpаtient clinic for worsening anxiety and mood changes. He reports being under significant stress over the past few months: he is two months behind on his rent, his mother is in the hospital, and he is considering moving home to be closer to his family. He describes how he feels: “Everything around me feels like a dream, like I’m in a movie or a simulation or something.” He denies other perceptual disturbances. The example provided is most consistent with: