Read the following case study carefully and answer the questions.
Jet is a 39-year-old bank employee. Jet has been described by his colleagues and management as a well-spoken, tidy employee who is always polite and eager to assist his clients. However, over the last two weeks Jet's behaviour has changed markedly. He refuses to use the bathroom at work explaining that the newly installed had dryers pull thoughts from his head out through his hands. Upon a colleague's suggestion that he need not use the hand dryers but the paper towels provided in the bathroom, Jet became irate, accusing his colleague of conspiring against him. Jet has become progressively difficult to understand often confusing customers with his responses.
QUESTION:
After a consultation with the company psychologist, which one of the following DSM-5 diagnoses is Jet most likely to be diagnosed with?
1) Delusional Disorder
2) Paranoid Personality Disorder
3) Brief Psychotic Disorder
4) Schizophreniform