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Midterm Exam: NR547 / NR-547 (Latest )
Differential Diagnosis in Psychiatric-Mental Health
across the Lifespan Practicum | Questions and
Answers | 100% Correct | Grade A - Chamberlain
The NR547 (2026/2027) Differential Diagnosis in Psychiatric-Mental Health Across the
Lifespan Practicum Preparation Guide is a fully updated, professionally structured study resource
designed to help PMHNP learners master diagnostic reasoning across childhood, adolescence,
adulthood, and geriatric populations.
This guide reflects current DSM-5-TR diagnostic criteria, evidence-based practice guidelines, and
modern PMHNP clinical decision-making processes.
Perfect for midterm preparation, clinical competency strengthening, and differential diagnosis
mastery, this resource includes exam-style questions, verified correct answers in green, and clear
rationales—designed to mimic the realistic structure and cognitive level of a graduate PMHNP
assessment while remaining 100% original.
Optimized for online marketplaces, academic support, and comprehensive PMHNP exam bundles.
Exam Coverage
✔ DSM-5-TR Differential Diagnosis Across the Lifespan
• Trauma-, stressor-related disorders
• Mood disorders (MDD, bipolar, cyclothymia)
• Anxiety disorders
• Neurodevelopmental disorders
• Personality disorders
• Neurocognitive disorders
• Substance use & dual diagnosis
✔ Psychopathology & Symptom Clustering
• Onset patterns (child, adult, geriatric)
• Biological vs. psychosocial presentations
• Medical mimics of psychiatric symptoms
• Rule-out processes & red flags
✔ PMHNP Clinical Reasoning
• Identifying key cues
• Prioritizing differential diagnoses
• Evaluating risk factors
, • Choosing appropriate diagnostic tests
✔ Cultural & Ethical Diagnostic Considerations
• Cultural formulation interview
• Bias reduction
• Trauma-informed assessment
✔ Safety, Risk, and Crisis Assessment
• Danger to self or others
• Required interventions
• Severity & impairment levels
Question:
Name the 6 of a differential diagnosis
Answer
1.) RULE OUT Malingering or Factitous disorder
2.)Ruling out substance etiology
3.) ruling out a medical etiology
4.) Determining the specific primary disorder
5.) Differentiating adjustment disorder from the residual "other specified" and "unspecified"
conditions
6.) Establishing the boundary with no mental disorder
Question:
Remember with step 5, the PMHNP can use "other specified" in the diagnosis when they want to
indicate the specific reason for a diagnosis.
Answer
They use "unspecified" if:
the information doesnt conform to DSM5
there is insufficient info to make a specific diagnosis
there is more info the be revealed with time OR they want to help the patient avoid stigmas
Question:
The PMHNP wants to rule out anemia as a cause for a patients fatigue and lack of motivation.
What lab should she order?
Answer
a CBC with iron studies
hg-12-18
hematocrit: 38-48%
Question:
What is normal creat/BUN level?
Answer
BUN: 7-18
creat: 0.6-1.2
,Question:
A patient presents with brain fog, lack of focus, insomnia & mood swing, lack of mental
alertness. What lab should the PMHNP order?
Answer
THYROID FUNCTION TEST
TSH: 0.4-4.5
T3: 100-200
T4: 5-11
Question:
The patient has a b12 level of 126 picograms/mL. what symptoms may the patient experience?
normal B12: 190-950 picograms/mL
but borderline is 200-300 & will need additional testing.
Answer
depression, mania, psychotic symptoms, cognitive impairment
Question:
Name the normal vitamin D levels:
Answer
20-50 ng/ML
Question:
Tell me about the HAM-A
This is the Hamilton Anxiety Scale, creates to assess somatic/cognitive anxiety symptoms.
MAINLY TO ASSESS ANXIETY. It does not help to assess the worry aspect usually found
with GAD.
Answer
less than 17- mild
18-23- mod
25-30 mod-severe
Question:
_____ shows there is an INCREASE activation of the amygdala which is an increase in the fear
response. There is a decreased activation of the pre-frontal cortex which results in lessened
reasoning.
Answer
Generalized Anxiety Disorder
, Question:
Explain GAD
Answer
This is characterized when a person WORRY about ORDINARY, everyday situations. These
patients have a hard time getting over the what ifs and hyperfixate. Due to this they are unable to
get more of their pressing tasks done
Question:
What is the DSM criteria for GAD?
Answer
WORRY about everyday tasks, sleep disturbance, restlessness, fatigue and immanent fear,
muscle tension or difficulty concentrating has to be persistent for six months or GREATER
Question:
Name the first line treatment for GAD.
Answer
SSRIs
Question:
What are some s/e of SSRIS?
Answer
hyponatremia, weight loss, weight gain, anxiety in the initial stages.
Question:
What is another adjunct treatment or PRN medication used as a treatment for GAD?
Answer
Buspirone- This is an anxiolytic with decreased adverse effects & drug interactions. It can take
about 2-4 weeks to work and it is pretty weak however effective when used as an adjunct.
Question:
What is the GAD-7 screening tool?
Answer
This is a rapid screening for the presence of clinically significant anxiety disorders such as:
GAD, Panic disorders, PTSD, & social phobias.
Question:
5-9- mild
Answer
10-14- moderate
over 15- severe & active treatment is warranted
Midterm Exam: NR547 / NR-547 (Latest )
Differential Diagnosis in Psychiatric-Mental Health
across the Lifespan Practicum | Questions and
Answers | 100% Correct | Grade A - Chamberlain
The NR547 (2026/2027) Differential Diagnosis in Psychiatric-Mental Health Across the
Lifespan Practicum Preparation Guide is a fully updated, professionally structured study resource
designed to help PMHNP learners master diagnostic reasoning across childhood, adolescence,
adulthood, and geriatric populations.
This guide reflects current DSM-5-TR diagnostic criteria, evidence-based practice guidelines, and
modern PMHNP clinical decision-making processes.
Perfect for midterm preparation, clinical competency strengthening, and differential diagnosis
mastery, this resource includes exam-style questions, verified correct answers in green, and clear
rationales—designed to mimic the realistic structure and cognitive level of a graduate PMHNP
assessment while remaining 100% original.
Optimized for online marketplaces, academic support, and comprehensive PMHNP exam bundles.
Exam Coverage
✔ DSM-5-TR Differential Diagnosis Across the Lifespan
• Trauma-, stressor-related disorders
• Mood disorders (MDD, bipolar, cyclothymia)
• Anxiety disorders
• Neurodevelopmental disorders
• Personality disorders
• Neurocognitive disorders
• Substance use & dual diagnosis
✔ Psychopathology & Symptom Clustering
• Onset patterns (child, adult, geriatric)
• Biological vs. psychosocial presentations
• Medical mimics of psychiatric symptoms
• Rule-out processes & red flags
✔ PMHNP Clinical Reasoning
• Identifying key cues
• Prioritizing differential diagnoses
• Evaluating risk factors
, • Choosing appropriate diagnostic tests
✔ Cultural & Ethical Diagnostic Considerations
• Cultural formulation interview
• Bias reduction
• Trauma-informed assessment
✔ Safety, Risk, and Crisis Assessment
• Danger to self or others
• Required interventions
• Severity & impairment levels
Question:
Name the 6 of a differential diagnosis
Answer
1.) RULE OUT Malingering or Factitous disorder
2.)Ruling out substance etiology
3.) ruling out a medical etiology
4.) Determining the specific primary disorder
5.) Differentiating adjustment disorder from the residual "other specified" and "unspecified"
conditions
6.) Establishing the boundary with no mental disorder
Question:
Remember with step 5, the PMHNP can use "other specified" in the diagnosis when they want to
indicate the specific reason for a diagnosis.
Answer
They use "unspecified" if:
the information doesnt conform to DSM5
there is insufficient info to make a specific diagnosis
there is more info the be revealed with time OR they want to help the patient avoid stigmas
Question:
The PMHNP wants to rule out anemia as a cause for a patients fatigue and lack of motivation.
What lab should she order?
Answer
a CBC with iron studies
hg-12-18
hematocrit: 38-48%
Question:
What is normal creat/BUN level?
Answer
BUN: 7-18
creat: 0.6-1.2
,Question:
A patient presents with brain fog, lack of focus, insomnia & mood swing, lack of mental
alertness. What lab should the PMHNP order?
Answer
THYROID FUNCTION TEST
TSH: 0.4-4.5
T3: 100-200
T4: 5-11
Question:
The patient has a b12 level of 126 picograms/mL. what symptoms may the patient experience?
normal B12: 190-950 picograms/mL
but borderline is 200-300 & will need additional testing.
Answer
depression, mania, psychotic symptoms, cognitive impairment
Question:
Name the normal vitamin D levels:
Answer
20-50 ng/ML
Question:
Tell me about the HAM-A
This is the Hamilton Anxiety Scale, creates to assess somatic/cognitive anxiety symptoms.
MAINLY TO ASSESS ANXIETY. It does not help to assess the worry aspect usually found
with GAD.
Answer
less than 17- mild
18-23- mod
25-30 mod-severe
Question:
_____ shows there is an INCREASE activation of the amygdala which is an increase in the fear
response. There is a decreased activation of the pre-frontal cortex which results in lessened
reasoning.
Answer
Generalized Anxiety Disorder
, Question:
Explain GAD
Answer
This is characterized when a person WORRY about ORDINARY, everyday situations. These
patients have a hard time getting over the what ifs and hyperfixate. Due to this they are unable to
get more of their pressing tasks done
Question:
What is the DSM criteria for GAD?
Answer
WORRY about everyday tasks, sleep disturbance, restlessness, fatigue and immanent fear,
muscle tension or difficulty concentrating has to be persistent for six months or GREATER
Question:
Name the first line treatment for GAD.
Answer
SSRIs
Question:
What are some s/e of SSRIS?
Answer
hyponatremia, weight loss, weight gain, anxiety in the initial stages.
Question:
What is another adjunct treatment or PRN medication used as a treatment for GAD?
Answer
Buspirone- This is an anxiolytic with decreased adverse effects & drug interactions. It can take
about 2-4 weeks to work and it is pretty weak however effective when used as an adjunct.
Question:
What is the GAD-7 screening tool?
Answer
This is a rapid screening for the presence of clinically significant anxiety disorders such as:
GAD, Panic disorders, PTSD, & social phobias.
Question:
5-9- mild
Answer
10-14- moderate
over 15- severe & active treatment is warranted
