Medical Dictionary

borderline personality disorder


Medical Definition of borderline personality disorder

  1. :  a disordered behavior pattern that is marked by unstable, intense emotions and mood with symptoms including instability in interpersonal relationships and self-image, fears of abandonment, and impulsive or unpredictable behavior and that has an onset during adolescence or early adulthood Borderline personality disorder afflicts an estimated 1.3 percent of U.S. adults.—Bruce Bower, Science News, 16 June 2007—abbreviation BPD

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