A 13-year-old boy often wakes in the morning with clear memory of very frightening dreams. Once awake, he is alert and oriented, but the dreams continue to be distressing. He mumbles and groans in his sleep right before waking but does not talk or move. History includes being homeless for 1 year and living in a series of temporary shelters when he was 9 years old. What is the most likely diagnosis?

A 31-year-old female patient with shift work disorder exhibits excessive daytime sleepiness that is interfering with her ability to perform duties as a registered nurse. She is started on armodafinil with good therapeutic response. Modafinil, and its R-enantiomer armodafinil, are hypothesized to promote wakefulness and increase alertness by

Of the following interventions used in insomnia treatment, which of the following describes stimulus control?

Prozac (fluoxetine) is FDA-approved for which of the following eating disorders?

Which of the following is a benefit a patient with traumatic brain injury (TBI) may receive when treated in a psychiatric inpatient hospital?

A 67-year-old woman with hypertension, type 2 diabetes mellitus, and hyperlipidemia presents to the PMHNP on referral from the emergency department, where she has presented seven times in the last year because of her concern that she has pancreatic cancer. She reports generalized abdominal discomfort that “comes and goes.” A thorough medical workup, including imaging and evaluation by a gastroenterologist, is negative. She is anxious and complains of poor sleep due to her concerns about her health. She has no other psychiatric symptoms or prior history. Which of the following somatic symptom and related disorders is the most likely diagnosis?

Gender dysphoria in adolescents or adults requires which of the following DSM-5-TR criteria?

A 14-year-old was continually sexually abused by her alcoholic father and family friend. She was threatened with perpetration of abuse on her younger sister if she told anyone, so she believed she had to stay alive to protect her sister despite strong suicidal ideations. She left home after being raped by her father and his friends as a “birthday present” for one of them. She traveled to a part of the city where she previously lived with hopes to find her grandmother. She traveled by public transportation and walked the streets without attracting attention. After 8 hours, she was stopped by police due to being out past curfew. When questioned, she could not recall recent events or give her current address, stating that she lived with her grandmother. When brought to the hospital, the PMHNP conducted a psychiatric evaluation. She was aware of her identity, but believed it was 2 years earlier and she was 2 years younger. She also denied any of the events that occurred over the recent years. Which of the following is the most likely diagnosis?

A 42-year-old man presents to the PMHNP for “help with my problem.” Although embarrassed he reports a preoccupation with fantasies and acts that involve observing people who are naked or engaging in sexual activity. His most likely diagnosis is

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