A 52-year-old man comes to the physician with the chief complaint of feeling depressed for the past 2 months. He notes that he is not sleeping well, has lost 5 kg in the last 6 weeks, and is having anergia and anhedonia. In addition, in the past 4 weeks he has begun to hear the voice of his dead father telling him that he is a failure and he has begun worrying that his organs are rotting away. Which of the following statements is true?