WGU D344 Diagnostic Processes /
PMHNP D344 OA Practice Test
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WGU D344 Diagnostic Processes / PMHNP
OA Practice Test
QUESTION 1
A 35-year-old patient presents with depressed mood, anhedonia, insomnia, fatigue, and
feelings of worthlessness for the past 3 weeks. Which diagnosis is MOST appropriate?
A. Persistent Depressive Disorder
B. Bipolar I Disorder, depressive episode
C. C. Major Depressive Disorder, Single Episode
D. Adjustment Disorder with Depressed Mood
E. Cyclothymic Disorder
CORRECT ANSWER: C — Major Depressive Disorder, Single Episode
RATIONALE: MDD requires at least 5 symptoms (including depressed mood or
anhedonia) lasting ≥2 weeks. This patient meets the criteria with depressed mood,
anhedonia, insomnia, fatigue, and worthlessness. PDD requires ≥2 years duration.
Adjustment disorder follows an identifiable stressor. Bipolar I requires a prior manic
episode.
QUESTION 2
A 28-year-old woman reports hearing voices telling her she is special, has grandiose
beliefs that she is a prophet, and has had these symptoms for 8 months. Her functioning
is significantly impaired. Which is the MOST likely diagnosis?
,A. Brief Psychotic Disorder
B. Schizophreniform Disorder
C. Delusional Disorder
D. Schizoaffective Disorder
E. E. Schizophrenia
CORRECT ANSWER: E — Schizophrenia
RATIONALE: Schizophrenia requires ≥2 positive/negative symptoms for ≥6 months
with significant functional impairment. This patient has hallucinations, delusions, and 8
months of symptoms. Brief Psychotic Disorder lasts 1 day–1 month. Schizophreniform
lasts 1–6 months. Delusional Disorder has no hallucinations. Schizoaffective requires a
concurrent mood episode.
QUESTION 3
A 42-year-old male has been drinking 8–10 beers daily for 5 years. He presents with
tremors, diaphoresis, and anxiety 12 hours after his last drink. What is the MOST
appropriate diagnosis?
A. Alcohol Use Disorder, mild
B. B. Alcohol Withdrawal
C. Generalized Anxiety Disorder
D. Delirium Tremens
E. Alcohol Intoxication
CORRECT ANSWER: B — Alcohol Withdrawal
RATIONALE: Alcohol withdrawal typically begins 6–24 hours after the last drink and
includes tremors, diaphoresis, anxiety, tachycardia, and hypertension. Delirium tremens
,is a severe form occurring 48–72 hours after last drink. Intoxication presents with CNS
depression, not withdrawal symptoms.
QUESTION 4
A 16-year-old presents with a 14-month history of depressed mood most of the day,
more days than not, accompanied by low energy and poor concentration. She has
never had a major depressive episode. What is the MOST appropriate diagnosis?
A. Major Depressive Disorder
B. Bipolar II Disorder
C. Adjustment Disorder with Depressed Mood
D. D. Persistent Depressive Disorder (Dysthymia)
E. Disruptive Mood Dysregulation Disorder
CORRECT ANSWER: D — Persistent Depressive Disorder (Dysthymia)
RATIONALE: PDD (dysthymia) requires depressed mood for ≥1 year in
children/adolescents (≥2 years in adults) with at least 2 additional symptoms. This
patient has had symptoms for 14 months without a full MDE, meeting PDD criteria.
DMDD requires severe temper outbursts.
QUESTION 5
A patient reports a period of abnormally elevated mood, decreased need for sleep,
grandiosity, and increased goal-directed activity lasting 4 days, without significant
functional impairment. What is the MOST likely diagnosis?
A. Bipolar I Disorder
B. Cyclothymic Disorder
C. C. Bipolar II Disorder
D. Major Depressive Disorder with Mixed Features
, E. Substance-Induced Mood Disorder
CORRECT ANSWER: C — Bipolar II Disorder
RATIONALE: Bipolar II is characterized by hypomanic episodes (≥4 days,
elevated/irritable mood with ≥3 symptoms) and at least one MDE. Hypomania does not
cause marked impairment or require hospitalization. Bipolar I requires full manic
episodes lasting ≥7 days or requiring hospitalization.
QUESTION 6
A 50-year-old man presents with the belief that his neighbor is spying on him. He has
had this belief for 7 months. He has no hallucinations and continues to function normally
at work and socially. What is the MOST likely diagnosis?
A. Schizophrenia
B. Paranoid Personality Disorder
C. Schizophreniform Disorder
D. Brief Psychotic Disorder
E. E. Delusional Disorder
CORRECT ANSWER: E — Delusional Disorder
RATIONALE: Delusional Disorder is characterized by one or more delusions lasting
≥1 month without other psychotic symptoms, with functioning relatively preserved.
Schizophrenia requires additional symptoms and functional impairment. Paranoid
Personality Disorder involves pervasive distrust but not fixed delusions.
QUESTION 7
A 7-year-old boy is brought in by his parents for excessive worry about school, family
safety, and health for the past 8 months, which is difficult to control. He has muscle
tension and sleep problems. What is the MOST appropriate diagnosis?
PMHNP D344 OA Practice Test
2025/2026 | Complete Verified
Question Bank | 100% Guaranteed
Pass
WGU D344 Diagnostic Processes / PMHNP
OA Practice Test
QUESTION 1
A 35-year-old patient presents with depressed mood, anhedonia, insomnia, fatigue, and
feelings of worthlessness for the past 3 weeks. Which diagnosis is MOST appropriate?
A. Persistent Depressive Disorder
B. Bipolar I Disorder, depressive episode
C. C. Major Depressive Disorder, Single Episode
D. Adjustment Disorder with Depressed Mood
E. Cyclothymic Disorder
CORRECT ANSWER: C — Major Depressive Disorder, Single Episode
RATIONALE: MDD requires at least 5 symptoms (including depressed mood or
anhedonia) lasting ≥2 weeks. This patient meets the criteria with depressed mood,
anhedonia, insomnia, fatigue, and worthlessness. PDD requires ≥2 years duration.
Adjustment disorder follows an identifiable stressor. Bipolar I requires a prior manic
episode.
QUESTION 2
A 28-year-old woman reports hearing voices telling her she is special, has grandiose
beliefs that she is a prophet, and has had these symptoms for 8 months. Her functioning
is significantly impaired. Which is the MOST likely diagnosis?
,A. Brief Psychotic Disorder
B. Schizophreniform Disorder
C. Delusional Disorder
D. Schizoaffective Disorder
E. E. Schizophrenia
CORRECT ANSWER: E — Schizophrenia
RATIONALE: Schizophrenia requires ≥2 positive/negative symptoms for ≥6 months
with significant functional impairment. This patient has hallucinations, delusions, and 8
months of symptoms. Brief Psychotic Disorder lasts 1 day–1 month. Schizophreniform
lasts 1–6 months. Delusional Disorder has no hallucinations. Schizoaffective requires a
concurrent mood episode.
QUESTION 3
A 42-year-old male has been drinking 8–10 beers daily for 5 years. He presents with
tremors, diaphoresis, and anxiety 12 hours after his last drink. What is the MOST
appropriate diagnosis?
A. Alcohol Use Disorder, mild
B. B. Alcohol Withdrawal
C. Generalized Anxiety Disorder
D. Delirium Tremens
E. Alcohol Intoxication
CORRECT ANSWER: B — Alcohol Withdrawal
RATIONALE: Alcohol withdrawal typically begins 6–24 hours after the last drink and
includes tremors, diaphoresis, anxiety, tachycardia, and hypertension. Delirium tremens
,is a severe form occurring 48–72 hours after last drink. Intoxication presents with CNS
depression, not withdrawal symptoms.
QUESTION 4
A 16-year-old presents with a 14-month history of depressed mood most of the day,
more days than not, accompanied by low energy and poor concentration. She has
never had a major depressive episode. What is the MOST appropriate diagnosis?
A. Major Depressive Disorder
B. Bipolar II Disorder
C. Adjustment Disorder with Depressed Mood
D. D. Persistent Depressive Disorder (Dysthymia)
E. Disruptive Mood Dysregulation Disorder
CORRECT ANSWER: D — Persistent Depressive Disorder (Dysthymia)
RATIONALE: PDD (dysthymia) requires depressed mood for ≥1 year in
children/adolescents (≥2 years in adults) with at least 2 additional symptoms. This
patient has had symptoms for 14 months without a full MDE, meeting PDD criteria.
DMDD requires severe temper outbursts.
QUESTION 5
A patient reports a period of abnormally elevated mood, decreased need for sleep,
grandiosity, and increased goal-directed activity lasting 4 days, without significant
functional impairment. What is the MOST likely diagnosis?
A. Bipolar I Disorder
B. Cyclothymic Disorder
C. C. Bipolar II Disorder
D. Major Depressive Disorder with Mixed Features
, E. Substance-Induced Mood Disorder
CORRECT ANSWER: C — Bipolar II Disorder
RATIONALE: Bipolar II is characterized by hypomanic episodes (≥4 days,
elevated/irritable mood with ≥3 symptoms) and at least one MDE. Hypomania does not
cause marked impairment or require hospitalization. Bipolar I requires full manic
episodes lasting ≥7 days or requiring hospitalization.
QUESTION 6
A 50-year-old man presents with the belief that his neighbor is spying on him. He has
had this belief for 7 months. He has no hallucinations and continues to function normally
at work and socially. What is the MOST likely diagnosis?
A. Schizophrenia
B. Paranoid Personality Disorder
C. Schizophreniform Disorder
D. Brief Psychotic Disorder
E. E. Delusional Disorder
CORRECT ANSWER: E — Delusional Disorder
RATIONALE: Delusional Disorder is characterized by one or more delusions lasting
≥1 month without other psychotic symptoms, with functioning relatively preserved.
Schizophrenia requires additional symptoms and functional impairment. Paranoid
Personality Disorder involves pervasive distrust but not fixed delusions.
QUESTION 7
A 7-year-old boy is brought in by his parents for excessive worry about school, family
safety, and health for the past 8 months, which is difficult to control. He has muscle
tension and sleep problems. What is the MOST appropriate diagnosis?
