Personality traits associated with panic disorder: change associated with treatment.

Eighty-two subjects with panic disorder completed the Personality Diagnostic Questionnaire (PDQ) before treatment and again after a period of relatively stable improvement 3 years later. At baseline, panic subjects scored higher than normal control subjects, who had been matched for age and sex, on avoidant, dependent, histrionic, and paranoid personality subscales. Improvement in panic symptoms after 3 years was associated with reductions in these same subscale scores. Examination of individual items that distinguished panic from normal subjects showed themes of dependency, lack of self-confidence, emotional instability, and sensitivity to criticism that reflected demoralization in the panic disorder subjects. To a large extent, the findings reveal nonspecific, state-dependent effects of panic and agoraphobic symptoms on the personality functioning and morale of patients with panic disorder.