A 27-Year-Old Man Is Taken to the Emergency Hospital by His

A 27-year-old man is taken to the emergency hospital by his roommate, who discovered him barricaded in a closet at home and stating, "They're on their way to get me. Nobody can be relied on." Last month, the patient was laid off from his work and split up with his girlfriend. For the past two weeks, he has heard voices threatening to murder him on a regular basis. He has no medical or mental background, and he does not drink or use illegal substances. The findings of the physical examination and laboratory tests are ordinary. The patient feels anxious and tense throughout the mental status evaluation. He claims that persons in black automobiles are tailing him and spying on him. Which of the following is the most likely diagnosis in this patient?

A) Acute stress disorder
B) Bipolar disorder with psychotic features
C) Brief psychotic disorder
D) Delusional disorder
E) Paranoid personality disorder
F) Schizophrenia
G) Schizophreniform disorder
H) Schizotypal personality disorder