Are there subtypes of panic disorder? An interpersonal perspective

Area of Science:

• Psychiatry
• Clinical Psychology
• Social Psychology

Background:

• Panic disorder (PD) imposes substantial personal, social, and economic burdens.
• Understanding specific interpersonal dysfunctions in PD is crucial for effective treatment.
• Previous research has not fully elucidated the interpersonal profiles associated with PD.

Purpose of the Study:

• To systematically examine interpersonal dysfunctions in patients with panic disorder.
• To identify distinct interpersonal profiles within the PD population.
• To explore the clinical utility of identified interpersonal clusters in predicting treatment outcomes.

Main Methods:

• 194 patients diagnosed with PD were included in the analyses.
• Participants were randomized to cognitive-behavioral therapy, panic-focused psychodynamic psychotherapy, or applied relaxation training.
• Interpersonal dysfunction was assessed using the Inventory of Interpersonal Problems-Circumplex.

Main Results:

• PD patients reported higher interpersonal distress than a normative group, particularly those with comorbid agoraphobia.
• Cluster analysis revealed two distinct, opposing interpersonal clusters: domineering-intrusive and nonassertive.
• The nonassertive cluster showed significant alliance strengthening during treatment, while the domineering-intrusive cluster did not.

Conclusions:

• Empirically derived interpersonal clusters offer clinically valuable and unique insights into individuals with PD.
• These clusters are not redundant with symptom severity and have implications for treatment.
• Identifying these interpersonal patterns can inform therapeutic strategies and predict treatment alliance development.