Greg, what type of dinosaurs are you seeing this time?
Tyrannosaurus. And I hear them too :(
Paranoid Personality Disorder
He's probably an accomplice
She is going to blow up the entire store
He could be planning to kill me
Obsessive Compulsive Disorder
Even though I just cleaned everything twice in the last half hour I need to do it again just to make sure and then I need to wash my hands and then I need to clean the bathroom again because there could be more germs.
This is paranoid schizophrenia because he frequently hears and sees dinosaurs (single theme)
This is paranoid personality disorder because Greg is suspicious of everyone around him
This is OCD because it's a recurring idea and thought