advertisement
Home » News » Personality Disorder or Bipolar?

Personality Disorder or Bipolar?

A new study suggests a widely used screening tool for bipolar disorder may incorrectly indicate borderline personality disorder rather than bipolar disorder.

The instrument in question is the Mood Disorder Questionnaire (MDQ), a brief questionnaire that assesses whether a patient displays some of the characteristic behaviors of bipolar disorder.

The test can be administered by clinicians or taken by patients on their own to determine if they screen positively for bipolar disorder. For the purposes of this study, the MDQ was scored by researchers.

Bipolar and borderline personality disorders share some clinical features, including fluctuations in mood and impulsive actions. The treatments, however, will vary depending on the individual and the diagnosis.

Principal investigator Mark Zimmerman, MD, director of outpatient psychiatry at Rhode Island Hospital, conducted a study to test the accuracy of the MDQ.

The research team interviewed nearly 500 patients using the Structured Clinical Interview for Diagnostic Statistical Manual IV (DSM-IV) and the Structured Interview for DSM-IV for personality disorders.

The patients were also asked to complete the MDQ. The research team then scored the questionnaires and found that patients with a positive indication for bipolar disorder using the MDQ were as likely to be diagnosed with borderline personality disorder as bipolar disorder when using the structured clinical interview.

Further, their findings indicate that borderline personality disorder was four times more frequently diagnosed in the group who screened positive on the MDQ.

Zimmerman says that these findings raise caution for using the MDQ in clinical practice because of how differently the disorders are treated.

“An incorrect diagnosis of bipolar disorder will usually lead to a treatment involving medications. If a patient truly has bipolar disorder, that treatment may work. However, at this time there are no approved medications to treat borderline personality disorder.

“Without an accurate diagnosis of borderline personality disorder, we may have many people in treatment who are taking medications that will not work to alleviate the characteristics of the condition from which they really suffer.”

Zimmerman continues, “In addition, patients with unrecognized borderline personality disorder will not be treated with one of the effective psychotherapies for this condition.

“It is therefore vital that we develop or identify a more accurate method to distinguish between these two conditions, and adopt it into clinical practice.”

Source: Lifespan

Personality Disorder or Bipolar?

Rick Nauert PhD

Rick Nauert, PhDDr. Rick Nauert has over 25 years experience in clinical, administrative and academic healthcare. He is currently an associate professor for Rocky Mountain University of Health Professionals doctoral program in health promotion and wellness. Dr. Nauert began his career as a clinical physical therapist and served as a regional manager for a publicly traded multidisciplinary rehabilitation agency for 12 years. He has masters degrees in health-fitness management and healthcare administration and a doctoral degree from The University of Texas at Austin focused on health care informatics, health administration, health education and health policy. His research efforts included the area of telehealth with a specialty in disease management.

APA Reference
Nauert PhD, R. (2015). Personality Disorder or Bipolar?. Psych Central. Retrieved on October 21, 2018, from https://psychcentral.com/news/2010/03/26/personality-disorder-or-bipolar/12406.html

 

Scientifically Reviewed
Last updated: 6 Oct 2015
Last reviewed: By John M. Grohol, Psy.D. on 6 Oct 2015
Published on PsychCentral.com. All rights reserved.