A 13-year-old girl presents to clinic for unusual behavior.  Her father states that for the past 3 months, his daughter claims she has been “communication with unidentified flying objects form outer space”.  During this period, it has become increasingly difficult to communicate with his daughter, and she has become an introvert.  What is the most likely diagnosis?

Mr. T was 42 years old when he was brought to a psychiatrist for evaluation. He lived with his parents and four brothers. His chief complaint was that his business partner was trying to force him to quit by giving him too much work.  Although he appeared outwardly calm, Mr. T complained of nervousness and restlessness. He also noted an inability to sleep at night, believing that his neighbor was making noise on purpose.  Mr. T’s brother corroborated that the neighbor was being quite noisy at night and did not seem to respond to requests to be quieter. The psychiatrist prescribed hypnotic and anxiolytic mediation. Three days later, the psychiatrist received a phone call from the patient’s brother, who requested that Mr. T be seen emergently.  Upon arriving at the psychiatrist’s office, Mr. T appeared quite anxious and perplexed.  He stated that the noises had grown louder and were now present throughout the day.  He was also convinced that other people besides his neighbor and his business partner were trying to harm him.  Mr. T’s brother now reported that Mr. T’s beliefs had no basis in reality. This case illustrates which of the following difficulties in diagnosing delusional disorder?

A 40-year-old transgender woman presents to your outpatient practice for an initial evaluation. You have never received training in gender-affirming therapy and have not had significant experience treating gender-diverse individuals. You are unsure about your ability to treat her. What is the most appropriate next step?

The rationale for the role of excess dopamine in schizophrenia is based on observations that

A 13-year-old girl (weight:

Which comorbid psychiatric disorder or class of disorders has the highest lifetime prevalence in adults with anorexia nervosa according to research data?

You evaluate a 4-year-old boy for significant weight loss who does not exhibit fear of weight gain, body image disturbance, or drive for thinness. His mother reports noticing that he avoids food with a certain bitter taste, will only eat foods that are crunchy, does not engage in recurrent regurgitation of food, and does not consume nonnutritive substances (e.g., dirt, clay, soap, paper). His day care teachers have requested an evaluation for suspected autism spectrum diagnoses. What is the most appropriate diagnosis given the aforementioned information from the evaluation?

Patients who binge eat but do not compensate in any way afterwards are most likely to have

What is an essential element in diagnosing attention-deficit/hyperactivity disorder (ADHD)?

A 10-year-old boy is brought to clinic by his mother because of frequent aggressive outbursts. His mother says that over the last several months, her son has been fighting with peers, is openly rude to his teachers, and actively ignores his parents’ rules. She reports that he goes out of his way to bully his younger sister. A week ago, he stole his classmate’s backpack. The classmate began crying, but her son did not return the backpack, apologize, or appear remorseful. The mother says she is worried that if this behavior continues, her son will soon be suspended from school. Which of the following traits displayed by this patient is more suggestive of a diagnosis of conduct disorder than of oppositional defiant disorder (ODD)?