[Depression and Comorbid Personality Disorder - Effectiveness of Psychodynamic Inpatient Psychotherapy]

Objectives Depression is one of the most common illnesses. The effectiveness of psychodynamic psychotherapy on depressive symptom load has been demonstrated. However, for patients suffering from comorbid personality disorder (PD) a decreased benefit has been reported, as well as fewer rates of remission and extended duration of remission. However, findings are inconsistent. The objective of this study was to determine potential differences in therapy-outcome comparing female patients with and without comorbid PD. Method Including female inpatients aged between 25-45 years (N=377) in a psychodynamic treatment, the dissenting outcome on depressive symptom load (among others BDI; HAMD) as well as psychodynamic variables (IPO) by patients with and without comorbid PD were analysed within a naturalistic multicenter intervention study (STOP-D). Data were collected in 15 psychodynamically oriented psychosomatic hospital units in Germany, based on self- and external-assessment instruments. Results Under comparable therapy-doses, female patients with and without comorbid PD benefit significantly from psychodynamic inpatient treatment. By equivalent baseline severity of clinical symptoms patients without comorbid PD show larger effect sizes in all inventories than patients with comorbid PD. Discussion Although the benefit is lower for depressed patients with comorbid personality disorder, the positive effect of inpatient psychodynamic psychotherapy is statistically and clinically significant in both groups. Influences of further comorbid symptoms and confounding symptoms between depression and PD, which were difficult to control, are possible. Further studies are necessary. Conclusion Although patients with comorbid PD benefit significantly from the inpatient treatment, a special therapeutic design seems to be indicated for these patients.