NR 547 MIDTERM EXAM
Differential Diagnosis in Psychiatric-Mental Health Across the Lifespan — Premium Original Practice Bank
Expanded questions • Diagnostic reasoning • Clinical rationales • Exam traps • Lifespan application
Important: This is an independently written study resource. It is not affiliated with or endorsed by Chamberlain University
or Stuvia and does not reproduce or claim to contain actual, leaked, recalled, or verified examination questions.
NR 547 — Independent Psychiatric-Mental Health Study Resource Page 1
, DIAGNOSTIC REASONING & PSYCHIATRIC ASSESSMENT
Question: What is the strongest starting point when developing a psychiatric differential diagnosis?
A. Prescribe medication immediately
B. Obtain a comprehensive history and mental status examination
C. Order every laboratory test available
D. Choose the most common diagnosis
Correct Answer: B. Obtain a comprehensive history and mental status examination
Rationale: A psychiatric diagnosis is based on a structured history, MSE, collateral information when appropriate,
medical/substance review and longitudinal course. Testing is then selected to clarify important alternatives.
Exam Tip: Exam trap: Do not anchor on the presenting symptom alone.
Question: Which question best helps distinguish a primary psychiatric disorder from a medical or
substance-induced presentation?
A. What is your favorite coping strategy?
B. What medications, substances and medical conditions are present, and when did symptoms begin relative to them?
C. Do you prefer mornings?
D. What is your education level?
Correct Answer: B. What medications, substances and medical conditions are present, and when did symptoms
begin relative to them?
Rationale: Temporal relationships are crucial. A new psychiatric syndrome in the setting of intoxication, withdrawal,
medication exposure or a medical illness requires consideration of a secondary cause.
Exam Tip: Clinical pearl: Always ask about prescribed drugs, OTC agents, supplements, alcohol and recreational
substances.
Question: Which feature is most useful for distinguishing delirium from a primary psychotic
disorder?
A. Presence of hallucinations
B. Fluctuating attention and awareness with an acute change from baseline
C. Suspiciousness
D. Abnormal speech
Correct Answer: B. Fluctuating attention and awareness with an acute change from baseline
Rationale: Delirium is defined by an acute disturbance in attention and awareness with a fluctuating course and evidence
of an underlying physiologic cause. Psychotic symptoms may occur in delirium but are not sufficient to establish it.
Exam Tip: Memory aid: Delirium = disturbance in attention + acute/fluctuating course.
NR 547 — Independent Psychiatric-Mental Health Study Resource Page 2
Differential Diagnosis in Psychiatric-Mental Health Across the Lifespan — Premium Original Practice Bank
Expanded questions • Diagnostic reasoning • Clinical rationales • Exam traps • Lifespan application
Important: This is an independently written study resource. It is not affiliated with or endorsed by Chamberlain University
or Stuvia and does not reproduce or claim to contain actual, leaked, recalled, or verified examination questions.
NR 547 — Independent Psychiatric-Mental Health Study Resource Page 1
, DIAGNOSTIC REASONING & PSYCHIATRIC ASSESSMENT
Question: What is the strongest starting point when developing a psychiatric differential diagnosis?
A. Prescribe medication immediately
B. Obtain a comprehensive history and mental status examination
C. Order every laboratory test available
D. Choose the most common diagnosis
Correct Answer: B. Obtain a comprehensive history and mental status examination
Rationale: A psychiatric diagnosis is based on a structured history, MSE, collateral information when appropriate,
medical/substance review and longitudinal course. Testing is then selected to clarify important alternatives.
Exam Tip: Exam trap: Do not anchor on the presenting symptom alone.
Question: Which question best helps distinguish a primary psychiatric disorder from a medical or
substance-induced presentation?
A. What is your favorite coping strategy?
B. What medications, substances and medical conditions are present, and when did symptoms begin relative to them?
C. Do you prefer mornings?
D. What is your education level?
Correct Answer: B. What medications, substances and medical conditions are present, and when did symptoms
begin relative to them?
Rationale: Temporal relationships are crucial. A new psychiatric syndrome in the setting of intoxication, withdrawal,
medication exposure or a medical illness requires consideration of a secondary cause.
Exam Tip: Clinical pearl: Always ask about prescribed drugs, OTC agents, supplements, alcohol and recreational
substances.
Question: Which feature is most useful for distinguishing delirium from a primary psychotic
disorder?
A. Presence of hallucinations
B. Fluctuating attention and awareness with an acute change from baseline
C. Suspiciousness
D. Abnormal speech
Correct Answer: B. Fluctuating attention and awareness with an acute change from baseline
Rationale: Delirium is defined by an acute disturbance in attention and awareness with a fluctuating course and evidence
of an underlying physiologic cause. Psychotic symptoms may occur in delirium but are not sufficient to establish it.
Exam Tip: Memory aid: Delirium = disturbance in attention + acute/fluctuating course.
NR 547 — Independent Psychiatric-Mental Health Study Resource Page 2
