AANP PMHNP Certification Exam | Complete
Questions with Correct Answers and Detailed
Rationales - Latest Update 2026
Section 1: Scientific Foundation and Neurobiology
(Questions 1–45)
1. A 45-year-old patient with major depressive disorder has failed
trials of two SSRIs. The PMHNP is considering a monoamine
oxidase inhibitor (MAOI) as the next treatment option. What is
the most important patient education before starting this
medication?
A. Avoid all aged cheeses, cured meats, and fermented foods
B. Take the medication in the morning to prevent insomnia
C. Increase intake of tyramine-rich foods to enhance efficacy
D. Discontinue all other medications permanently
Answer: A
Rationale: MAOIs such as phenelzine and tranylcypromine carry a significant risk of
hypertensive crisis when combined with tyramine-rich foods, including aged cheeses,
cured meats, and fermented products . Hypertensive crisis can be life-threatening, so
this dietary restriction is essential before starting therapy . Taking the medication in the
morning is appropriate to prevent insomnia, but this is not the most critical education
point.
2. A 32-year-old patient with generalized anxiety disorder is
prescribed buspirone. The patient returns after 3 weeks stating
the medication "doesn't work." What is the most appropriate
response?
,A. Increase the dose immediately
B. Explain that the full therapeutic effect may take 2–4 weeks to develop
C. Switch to a benzodiazepine for faster relief
D. Discontinue buspirone and start an SSRI
Answer: B
Rationale: Buspirone has a delayed onset of action, often taking 2–4 weeks to achieve
full therapeutic effect . Patients should be counseled to continue the medication and
return for follow-up evaluation before considering treatment failure . Increasing the
dose prematurely or switching medications without allowing sufficient time for
effectiveness is inappropriate.
3. The PMHNP is evaluating a patient for a first-episode psychotic
disorder. The patient reports hearing voices that comment on
their actions. According to DSM-5-TR criteria, this symptom is
classified as:
A. Illusion
B. Hallucination
C. Delusion
D. Thought broadcasting
Answer: B
Rationale: Auditory hallucinations are defined as hearing voices or sounds that are not
present in reality. Third-person auditory hallucinations that comment on the person's
actions are characteristic of schizophrenia and related psychotic disorders . Illusions are
misperceptions of real stimuli. Delusions are fixed false beliefs. Thought broadcasting is
the belief that others can hear one's thoughts.
4. A 72-year-old patient with neurocognitive disorder has been
taking donepezil for 6 months. The family reports the patient is
now "more confused" and "aggressive." Which action should the
PMHNP take?
,A. Increase the donepezil dose
B. Assess for adverse effects and evaluate medication compliance
C. Prescribe a second cholinesterase inhibitor
D. Discontinue all medications
Answer: B
Rationale: Donepezil may cause gastrointestinal side effects and, in some patients, can
exacerbate agitation, confusion, or aggression. The PMHNP should assess for adverse
effects and evaluate medication compliance before making changes . Increasing the
dose or adding a second cholinesterase inhibitor without assessment could worsen
symptoms.
5. Which neurotransmitter system is primarily implicated in the
pathophysiology of schizophrenia?
A. Serotonin dysregulation in the prefrontal cortex
B. Dopamine hyperactivation in the mesolimbic pathway
C. Norepinephrine depletion in the locus coeruleus
D. Glutamate excess in the hippocampal formation
Answer: B
Rationale: The dopamine hypothesis of schizophrenia posits that hyperactive
dopaminergic transmission in the mesolimbic pathway contributes to positive symptoms
(delusions, hallucinations), while dopamine hypofunction in the mesocortical pathway
may contribute to negative symptoms and cognitive deficits . This pathway is the
primary target of antipsychotic medications.
6. A patient is started on sertraline for major depressive disorder.
Which side effect is most common during the first few weeks?
A. Weight gain
B. Gastrointestinal distress, nausea, and headache
C. Insomnia
D. Sexual dysfunction
Answer: B
, Rationale: SSRIs like sertraline commonly cause gastrointestinal distress, nausea, and
headache during the first weeks of therapy . These side effects are usually dose-
dependent and often resolve over time . Sexual dysfunction and insomnia can also occur
but are generally not the most common initial side effects.
7. A patient has been diagnosed with bipolar I disorder. Which
medication is considered a first-line mood stabilizer for
maintenance treatment?
A. Lithium
B. Carbamazepine
C. Lamotrigine
D. Valproic acid
Answer: A
Rationale: Lithium is considered the gold standard first-line mood stabilizer for
maintenance treatment of bipolar I disorder . It has been shown to reduce the frequency
and severity of manic and depressive episodes . Lamotrigine is effective for depressive
episodes, while valproic acid and carbamazepine are also used but are not considered
first-line for maintenance in all patients.
8. The PMHNP is assessing a patient who reports feeling "sad,"
"empty," and "hopeless" for most of the day for the past three
weeks. The patient also reports anhedonia and difficulty sleeping.
What is the most likely diagnosis?
A. Bipolar II disorder
B. Major depressive disorder (single episode)
C. Persistent depressive disorder
D. Adjustment disorder with depressed mood
Answer: B
Rationale: Major depressive disorder is characterized by at least five depressive
symptoms present for more than two weeks, including sad or empty mood, anhedonia,
and sleep disturbance . Persistent depressive disorder requires symptoms for at least
two years. Bipolar II disorder involves episodes of hypomania not described here.
Questions with Correct Answers and Detailed
Rationales - Latest Update 2026
Section 1: Scientific Foundation and Neurobiology
(Questions 1–45)
1. A 45-year-old patient with major depressive disorder has failed
trials of two SSRIs. The PMHNP is considering a monoamine
oxidase inhibitor (MAOI) as the next treatment option. What is
the most important patient education before starting this
medication?
A. Avoid all aged cheeses, cured meats, and fermented foods
B. Take the medication in the morning to prevent insomnia
C. Increase intake of tyramine-rich foods to enhance efficacy
D. Discontinue all other medications permanently
Answer: A
Rationale: MAOIs such as phenelzine and tranylcypromine carry a significant risk of
hypertensive crisis when combined with tyramine-rich foods, including aged cheeses,
cured meats, and fermented products . Hypertensive crisis can be life-threatening, so
this dietary restriction is essential before starting therapy . Taking the medication in the
morning is appropriate to prevent insomnia, but this is not the most critical education
point.
2. A 32-year-old patient with generalized anxiety disorder is
prescribed buspirone. The patient returns after 3 weeks stating
the medication "doesn't work." What is the most appropriate
response?
,A. Increase the dose immediately
B. Explain that the full therapeutic effect may take 2–4 weeks to develop
C. Switch to a benzodiazepine for faster relief
D. Discontinue buspirone and start an SSRI
Answer: B
Rationale: Buspirone has a delayed onset of action, often taking 2–4 weeks to achieve
full therapeutic effect . Patients should be counseled to continue the medication and
return for follow-up evaluation before considering treatment failure . Increasing the
dose prematurely or switching medications without allowing sufficient time for
effectiveness is inappropriate.
3. The PMHNP is evaluating a patient for a first-episode psychotic
disorder. The patient reports hearing voices that comment on
their actions. According to DSM-5-TR criteria, this symptom is
classified as:
A. Illusion
B. Hallucination
C. Delusion
D. Thought broadcasting
Answer: B
Rationale: Auditory hallucinations are defined as hearing voices or sounds that are not
present in reality. Third-person auditory hallucinations that comment on the person's
actions are characteristic of schizophrenia and related psychotic disorders . Illusions are
misperceptions of real stimuli. Delusions are fixed false beliefs. Thought broadcasting is
the belief that others can hear one's thoughts.
4. A 72-year-old patient with neurocognitive disorder has been
taking donepezil for 6 months. The family reports the patient is
now "more confused" and "aggressive." Which action should the
PMHNP take?
,A. Increase the donepezil dose
B. Assess for adverse effects and evaluate medication compliance
C. Prescribe a second cholinesterase inhibitor
D. Discontinue all medications
Answer: B
Rationale: Donepezil may cause gastrointestinal side effects and, in some patients, can
exacerbate agitation, confusion, or aggression. The PMHNP should assess for adverse
effects and evaluate medication compliance before making changes . Increasing the
dose or adding a second cholinesterase inhibitor without assessment could worsen
symptoms.
5. Which neurotransmitter system is primarily implicated in the
pathophysiology of schizophrenia?
A. Serotonin dysregulation in the prefrontal cortex
B. Dopamine hyperactivation in the mesolimbic pathway
C. Norepinephrine depletion in the locus coeruleus
D. Glutamate excess in the hippocampal formation
Answer: B
Rationale: The dopamine hypothesis of schizophrenia posits that hyperactive
dopaminergic transmission in the mesolimbic pathway contributes to positive symptoms
(delusions, hallucinations), while dopamine hypofunction in the mesocortical pathway
may contribute to negative symptoms and cognitive deficits . This pathway is the
primary target of antipsychotic medications.
6. A patient is started on sertraline for major depressive disorder.
Which side effect is most common during the first few weeks?
A. Weight gain
B. Gastrointestinal distress, nausea, and headache
C. Insomnia
D. Sexual dysfunction
Answer: B
, Rationale: SSRIs like sertraline commonly cause gastrointestinal distress, nausea, and
headache during the first weeks of therapy . These side effects are usually dose-
dependent and often resolve over time . Sexual dysfunction and insomnia can also occur
but are generally not the most common initial side effects.
7. A patient has been diagnosed with bipolar I disorder. Which
medication is considered a first-line mood stabilizer for
maintenance treatment?
A. Lithium
B. Carbamazepine
C. Lamotrigine
D. Valproic acid
Answer: A
Rationale: Lithium is considered the gold standard first-line mood stabilizer for
maintenance treatment of bipolar I disorder . It has been shown to reduce the frequency
and severity of manic and depressive episodes . Lamotrigine is effective for depressive
episodes, while valproic acid and carbamazepine are also used but are not considered
first-line for maintenance in all patients.
8. The PMHNP is assessing a patient who reports feeling "sad,"
"empty," and "hopeless" for most of the day for the past three
weeks. The patient also reports anhedonia and difficulty sleeping.
What is the most likely diagnosis?
A. Bipolar II disorder
B. Major depressive disorder (single episode)
C. Persistent depressive disorder
D. Adjustment disorder with depressed mood
Answer: B
Rationale: Major depressive disorder is characterized by at least five depressive
symptoms present for more than two weeks, including sad or empty mood, anhedonia,
and sleep disturbance . Persistent depressive disorder requires symptoms for at least
two years. Bipolar II disorder involves episodes of hypomania not described here.
