Can Patients With Narcissistic Personality Disorder Change? A Case Series.

Abstract: The study was set out to establish the potential for psychotherapy to effect improvements in patients with narcissistic personality disorder (NPD). Eight patients with NPD who improved in treatment were identified. Consensus clinician/investigator diagnostic scores from before and after the psychotherapies were retroactively established on the Diagnostic Interview for Narcissism (DIN) and the Diagnostic Statistic Manual for Psychiatric Disorders, 5th Edition (DSM-5) Personality Disorder Section II criteria. Psychosocial functioning (work or school, romantic relationships) before and after the psychotherapies was retroactively evaluated as well. At the completion of the therapies after 2.5 to 5 years, all patients had improved, no longer met DIN or DSM-5 criteria for NPD, and showed better psychosocial functioning. Symptomatic improvements were associated with large effect sizes. In conclusion, changes in NPD can occur in treatment after 2.5 to 5 years. Future research should identify patient characteristics, interventions, and common processes in such improved cases that could help with development of treatments.