Persistent Depressive Disorder Persistent Depressive Disorder Comorbidities & Differential Diagnosis 1

Question 1

Which anxiety disorder most commonly co-occurs with Persistent Depressive Disorder?

Accepted Answer

Generalized Anxiety Disorder (GAD)

Answer

Generalized Anxiety Disorder is among the most common comorbidities in PDD, with the two disorders sharing overlapping symptom profiles.

Question 2

When a patient with PDD also meets criteria for Generalized Anxiety Disorder, what treatment adjustment is commonly recommended?

Accepted Answer

Address both conditions simultaneously, often with SSRIs that treat both

Answer

SSRIs have evidence for both PDD and GAD, and treating both concurrently is recommended rather than addressing only one condition.

Question 3

Persistent Depressive Disorder has the highest differentiation challenge with which personality disorder?

Accepted Answer

Borderline Personality Disorder

Answer

Borderline Personality Disorder often features chronic dysphoria, emptiness, and mood instability that overlap significantly with PDD symptoms.

Question 4

In a patient with both PDD and Alcohol Use Disorder, which consideration is most clinically important?

Accepted Answer

Both conditions must be assessed and treated as they perpetuate each other

Answer

PDD and Alcohol Use Disorder are bidirectional; alcohol worsens depression and PDD increases drinking, requiring integrated dual-diagnosis treatment.

Question 5

Which feature most helps differentiate Persistent Depressive Disorder from Cyclothymic Disorder?

Accepted Answer

The absence of hypomanic periods in PDD

Answer

Cyclothymic Disorder involves alternating periods of subsyndromal depression AND hypomania, whereas PDD does not include hypomanic periods.

Persistent Depressive Disorder Practice Test