It used to be thought that personality disorders (PDs) were incurable and untreatable. Both of these assumptions turned out to be wrong. Patients with different types of PD usually improve with time.1 As shown by large-scale prospective research,2 recovery is particularly striking in borderline personality disorder (BPD). There is also good evidence for the efficacy of psychotherapy for many patients with BPD.3 As Biskin4 describes, most patients either recover entirely, or improve to a point when they graduate to a diagnosis of PD, unspecified. And as Black5 describes, even patients with antisocial personality disorder (ASPD) show some degree of recovery.
Patients with PD have a better prognosis than many patients with mood disorders. This suggests that the practice of targeting mood symptoms, while failing to make PD diagnoses (as so often happens in clinical settings), is profoundly mistaken. This is a particular problem in adolescence, a stage at which most PDs are diagnosable. (The exception is ASPD, but the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, rules to only make this diagnosis after age 18 are arbitrary.) In adolescent BPD, a wide range of impulsive symptoms are associated with unstable mood,4 creating a classical clinical picture. It is also an error to see adolescent PD as a passing phase in development, which it is not.
Most patients with ASPD and BPD are young, and, as they age, we see fewer of them. This creates the impression that patients are more chronic, which has been called “The Clinician’s Illusion.”6 However, people who continue to return to clinical settings still have significant problems. We do not know how to predict these outcomes, and there can be many surprises, both positive and negative, when patients are followed up. The most consistent finding in the literature is that these patients do much better if they can get their substance abuse under control.7
How should clinicians address residual dysfunction in these patients? I have proposed a rehabilitation model,8 but we currently lack firm evidence that such measures would be effective. That could be a subject for the next stage of PD research, on treatment in the context of long-term outcome.
Acknowledgments
Dr Paris has no conflicts of interest to report.
The Canadian Psychiatric Association proudly supports the In Review series by providing an honorarium to the authors.
References
- 1.Gunderson JG, Stout RL, McGlashan TH, et al. Ten-year course of borderline personality disorder: psychopathology and function from the Collaborative Longitudinal Personality Disorders Study. Arch Gen Psychiatry. 2011;68:827–837. doi: 10.1001/archgenpsychiatry.2011.37. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 2.Zanarini MC, Frankenburg F, Reich B, et al. Attainment and stability of sustained symptomatic remission and recovery among borderline patients and Axis II comparison subjects: a 16-year prospective follow-up study. Am J Psychiatry. 2012;169:476–483. doi: 10.1176/appi.ajp.2011.11101550. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 3.Paris J. Effectiveness of differing psychotherapy approaches in the treatment of borderline personality disorder. Curr Psychiatry Rep. 2010;12:56–60. doi: 10.1007/s11920-009-0083-0. [DOI] [PubMed] [Google Scholar]
- 4.Biskin RS. The lifetime course of borderline personality disorder. Can J Psychiatry. 2015;60(7):303–308. doi: 10.1177/070674371506000702. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 5.Black DW. The natural history of antisocial personality disorder. Can J Psychiatry. 2015;60(7):309–314. doi: 10.1177/070674371506000703. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 6.Cohen P, Cohen J. The clinician’s illusion. Arch Gen Psychiatry. 1984;41:1178–1182. doi: 10.1001/archpsyc.1984.01790230064010. [DOI] [PubMed] [Google Scholar]
- 7.Paris J. Treatment of borderline personality disorder: a guide to evidence-based practice. New York (NY): Guilford Press; 2008. [Google Scholar]
- 8.Paris J. A concise guide to personality disorders. Washington (DC): American Psychological Association; 2015. [Google Scholar]