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In schizophrenia, abnormalities in which neurotransmitter system have long been considered central to the disorder’s pathophysiology?

Of the following, which symptom would not be considered a negative symptom of schizophrenia?

On mental status examination, a patient with dementia may display:

Reduced dopamine activity in the mesocortical pathway projecting to the prefrontal cortex is thought to underlie which cluster of schizophrenia symptoms?

Which medication is commonly used to treat the severe muscle rigidity in NMS?

Michael, a 40-year-old teacher, reports that over the past 3 weeks he has been feeling “down in the dumps.” He has trouble sleeping, lacks energy, and has gained 6 pounds. He denies suicidal ideation but feels guilty for not being more productive. Michael also notes difficulty concentrating on his lesson plans. Which additional symptom would fulfill the DSM-5 criteria for MDD in this scenario?

Which class of medication is considered a cornerstone in the long-term management of bipolar disorder, particularly for stabilizing mood and reducing mania recurrence?

Which of the following differentiates hypomania from mania in DSM-5-TR?

Which of the following features best differentiates delirium from dementia?

Which of the following symptoms would be most indicative of schizotypal personality disorder?