NR547 DIFFERENTIAL DIAGNOSIS PMH MIDTERM
PRACTICUM EXAM 2026/2027 | Weeks 1-4 Covered |
Across the Lifespan | Complete Review | Latest Update |
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Week 1 Content: Foundational Diagnostic Concepts & Clinical
Interviewing (Q1-10)
Q1. A PMHNP student is organizing a study guide for the DSM-5-TR. The student
correctly identifies that Section II contains diagnostic criteria and codes organized
into how many disorder classes?
A. 15 disorder classes
B. 18 disorder classes
C. 22 disorder classes
D. 25 disorder classes
Correct Answer: C
Rationale: DSM-5-TR Section II organizes diagnostic criteria and codes into 22
disorder classes. Section III contains emerging measures and models, including the
Cultural Formulation Interview (CFI). Options A, B, and D understate or overstate the
number of classes.
Q2. A 34-year-old client reports mood fluctuations that range from severe
depression to periods of extreme energy. The PMHNP recognizes that while
categorical diagnosis provides a label, understanding the severity and frequency of
mood episodes requires a dimensional approach. Which statement best describes
the relationship between these approaches in the DSM-5-TR?
A. The DSM-5-TR relies exclusively on categorical diagnosis, making dimensional
assessment obsolete
B. Dimensional approaches measure symptom severity, frequency, and functional
impairment across a continuum, complementing categorical diagnoses
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C. Dimensional approaches are only used for personality disorders, while all other
disorders use categorical criteria exclusively
D. Categorical and dimensional approaches are mutually exclusive and cannot be
used for the same client
Correct Answer: B
Rationale: DSM-5-TR integrates categorical diagnosis with dimensional assessment
through specifiers, severity indicators, and cross-cutting symptom measures. Option
A is incorrect because dimensional tools are embedded throughout; C is incorrect
because dimensions apply broadly; D is incorrect because they are designed to
complement each other.
Q3. A 28-year-old client presents with sudden-onset paranoia, auditory
hallucinations, and disorganized behavior that began two weeks after starting high-
dose corticosteroids for lupus. Before assigning a primary psychotic disorder
diagnosis, the PMHNP must first:
A. Rule out substance/medication-induced psychotic disorder and underlying
medical condition
B. Immediately diagnose schizophrenia due to the presence of hallucinations and
disorganized behavior
C. Diagnose brief psychotic disorder because the symptoms began after a medical
treatment
D. Prescribe antipsychotics without investigating etiology
Correct Answer: A
Rationale: Differential diagnosis requires ruling out substance-induced and medical
causes before assigning a primary psychiatric disorder. Corticosteroids can induce
psychotic symptoms. Option B violates diagnostic hierarchy; C is premature without
ruling out physiological causes; D is unsafe.
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Q4. During a mental status examination, a client speaks at a rate of 120 words per
minute with increased volume, making it difficult for the PMHNP to interrupt. The
client's speech is best described as:
A. Pressured speech with increased rate and volume
B. Mutism with decreased rate and volume
C. Dysarthria with articulation deficits
D. Aphasia with comprehension deficits
Correct Answer: A
Rationale: Pressured speech is characterized by rapid, loud, difficult-to-interrupt
speech, commonly observed in manic episodes. Mutism (B) is absent speech;
dysarthria (C) involves motor articulation problems; aphasia (D) involves language
comprehension or production deficits.
Q5. A client states, "I feel hopeless and empty inside" (mood). During the interview,
the PMHNP observes minimal facial movement, monotonic vocal tone, and reduced
gesturing. The affect is best described as:
A. Labile affect with rapid shifts between emotions
B. Blunted affect with significant reduction in emotional expressivity
C. Inappropriate affect incongruent with stated mood
D. Euphoric affect with excessive emotional expression
Correct Answer: B
Rationale: Blunted affect describes a substantial reduction in the intensity of
emotional expression. The client's observed minimal facial movement and monotonic
tone match this description. Labile (A) shifts rapidly; inappropriate (C) contradicts the
mood; euphoric (D) is excessively cheerful.
Q6. A client with schizophrenia is asked about their morning routine. They respond
by discussing breakfast, then deviate to talking about cereal commercials, then shift
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to discussing television networks, then mention satellites, and finally discuss outer
space. The PMHNP recognizes this thought process as:
A. Circumstantial thinking that eventually returns to the point
B. Tangential thinking that deviates further without returning to the original question
C. Linear thinking that follows a direct logical sequence
D. Perseverative thinking that repeats the same phrase continuously
Correct Answer: B
Rationale: Tangential thinking involves progressively diverging from the original
topic without returning to the point. Circumstantial (A) eventually returns to the
topic; linear (C) is goal-directed; perseveration (D) is repetitive, stuck speech.
Q7. A client reports that the television news anchor is speaking directly to them with
hidden messages about their personal life. The client also describes hearing two
unknown voices arguing about whether they should eat breakfast. The first symptom
represents thought content, while the second represents:
A. A delusion of reference and third-person auditory hallucinations
B. An obsession and a visual hallucination
C. An illusion and a gustatory hallucination
D. A preoccupation and a tactile hallucination
Correct Answer: A
Rationale: Believing the news anchor sends personal messages is a delusion of
reference (thought content). Hearing two voices arguing is a third-person auditory
hallucination (perceptual disturbance). Obsessions (B) are intrusive thoughts
recognized as one's own; illusions (C) are misperceptions of real stimuli; tactile
hallucinations (D) involve touch.
Q8. During cognitive testing, a client is alert and oriented to person, place, and time.
They can repeat three words immediately but cannot recall them after five minutes.