borderline personality disorder

noun

: a personality disorder that is marked by unstable, intense emotions and mood with symptoms including instability in interpersonal relationships and self-image, fear of abandonment, and impulsive or unpredictable behavior and that has an onset during adolescence or early adulthood
Like others with borderline personality disorder, she had intense and unstable relationships with people that veered from adoration to intense hatred and jealousy the moment she felt the merest slight.Richard A. Friedman
Borderline personality disorder afflicts an estimated 1.3 percent of U.S. adults.Bruce Bower
abbreviation BPD

Examples of borderline personality disorder in a Sentence

Recent Examples on the Web
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Dawn, a teen mom who worked hard to pay for her daughter’s braces and loved to sing hymns, suffered from borderline personality disorder, depression and alcoholism, according to her family. Sam Gillette, People.com, 29 May 2025 Although developed to treat depression, it’s also sometimes used to manage symptoms of mental health conditions like bipolar disorder and borderline personality disorder (BPD), as well as issues with grief, social isolation, and relationship conflicts. Laura Dorwart, Verywell Health, 28 May 2025 Others may have borderline personality disorder or schizophrenia. Maya Richard-Craven, Forbes, 17 Mar. 2025 In November 1999, writer Joan Didion started seeing Roger MacKinnon, a New York psychiatrist, on the recommendation of the psychiatrist who was treating her daughter Quintana for borderline personality disorder, depression, and alcoholism. Heller McAlpin, NPR, 22 Apr. 2025 See All Example Sentences for borderline personality disorder

Word History

First Known Use

1970, in the meaning defined above

Time Traveler
The first known use of borderline personality disorder was in 1970

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Cite this Entry

“Borderline personality disorder.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/borderline%20personality%20disorder. Accessed 15 Jun. 2025.

Medical Definition

borderline personality disorder

noun
: a personality disorder that is marked by unstable, intense emotions and mood with symptoms including instability in interpersonal relationships and self-image, fear 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
abbreviation BPD
Last Updated: - Updated example sentences
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