Persistent Depressive Disorder Persistent Depressive Disorder Comorbidities & Differential Diagnosis 2 — Questions and Answers
Question 1: Which chronic medical condition has a bidirectional relationship with Persistent Depressive Disorder and is frequently comorbid?
- Acute appendicitis
- Chronic pain conditions such as fibromyalgia (Correct answer)
- Seasonal allergies
- Acute viral infections
Correct answer: Chronic pain conditions such as fibromyalgia
Chronic pain conditions like fibromyalgia frequently co-occur with PDD, with each condition worsening the other's severity and prognosis.
Question 2: A patient presents with 2 years of low mood and also endorses inattention and disorganization. Which comorbid diagnosis must be evaluated?
- Autism Spectrum Disorder
- Attention-Deficit/Hyperactivity Disorder (ADHD) (Correct answer)
- Tourette's Disorder
- Intellectual Disability
Correct answer: Attention-Deficit/Hyperactivity Disorder (ADHD)
ADHD frequently co-occurs with PDD, and cognitive symptoms such as poor concentration can overlap, requiring careful differential assessment.
Question 3: Which eating disorder most commonly co-occurs with Persistent Depressive Disorder?
- Pica
- Binge Eating Disorder (Correct answer)
- Avoidant/Restrictive Food Intake Disorder (ARFID)
- Rumination Disorder
Correct answer: Binge Eating Disorder
Binge Eating Disorder is the most prevalent eating disorder comorbid with PDD, with emotional eating often used to manage chronic low mood.
Question 4: What is the term used when a full Major Depressive Episode is superimposed on a baseline of Persistent Depressive Disorder?
- Recurrent MDD
- Double Depression (Correct answer)
- Bipolar Depression
- Psychotic Depression
Correct answer: Double Depression
The clinical term 'double depression' describes the superimposition of a full MDE on the chronic baseline of PDD.
Question 5: Differentiating PDD from Major Depressive Disorder, single episode, primarily hinges on which factor?
- Number of depressive symptoms
- Duration and chronicity of symptoms (2+ years) (Correct answer)
- Presence of cognitive symptoms
- Family history of depression
Correct answer: Duration and chronicity of symptoms (2+ years)
The critical distinction is that PDD requires 2+ years of chronic depressed mood, while a single MDE requires only 2 weeks of symptoms.
Question 6: A patient with PDD reports chronic low mood that intensifies only in winter. What additional specifier or diagnosis should be considered?
- With anxious distress specifier
- Seasonal pattern specifier (Correct answer)
- With atypical features
- With peripartum onset specifier
Correct answer: Seasonal pattern specifier
When depressive symptoms consistently worsen in winter and improve in spring, the seasonal pattern specifier should be applied even within PDD.
Persistent Depressive Disorder Persistent Depressive Disorder Comorbidities & Differential Diagnosis 2
Which chronic medical condition has a bidirectional relationship with Persistent Depressive Disorder and is frequently comorbid?