Question: Admission assessment findings on a psychiatric inpatient include 2 3- week history of the following: severe feelings of worthlessness, irritability, and agitation; poor appetite and weight loss; insomnia; and inability to concentrate. The patient expresses a belief the hospital admission is a punishment for times committed by the patient against family members. On questioning, the patient denies feelings of “being on top of the world.” Which of the following would be the best diagnosis for this patient
A: Delusional (Paranoid) Disorder
B: Dysthymia
C: Schizophrenia
D: Major Depression
Please eliminate two incorrect options first, then think it step by step and choose the most proper one option.