title: Personality disorders in euthymic bipolar patients: a systematic review.
abstract: OBJECTIVE
  To identify, by means of a systematic review, the frequency with which comorbid personality disorders (PDs) have been assessed in studies of euthymic bipolar patients.
  
  
  METHODS
  PubMed, ciELO and PsychINFO databases were searched for eligible articles published between 1997 and 2013. After screening 1,249 empirical papers, two independent reviewers identified three articles evaluating the frequency of PDs in patients with bipolar disorders assessed in a state of euthymia.
  
  
  RESULTS
  The total sample comprised 376 euthymic bipolar patients, of whom 155 (41.2%) had at least one comorbid PD. Among them, we found 87 (23.1%) in cluster B, 55 (14.6%) in cluster C, and 25 (6.6%) in cluster A. The frequencies of PD subtypes were: borderline, 38 (10.1%); histrionic, 29 (7.7%); obsessive-compulsive, 28 (7.4%); dependent, 19 (5%); narcissistic, 17 (4.5%); schizoid, schizotypal, and avoidant, 11 patients each (2.95%); paranoid, five (1.3%); and antisocial, three (0.79%).
  
  
  CONCLUSIONS
  The frequency of comorbid PD was high across the spectrum of euthymic bipolar patients. In this population, the most common PDs were those in cluster B, and the most frequent PD subtype was borderline, followed by histrionic and obsessive-compulsive.
authors.affiliation: Graduate Program in Medicine and Health, Universidade Federal da Bahia, Salvador, BA, Brazil.
authors.forename: Severino
authors.initials: S
authors.lastname: Bezerra-Filho
authors.affiliation: Program of Mood and Anxiety Disorders, Universidade Federal da Bahia, Salvador, BA, Brazil.
authors.forename: Amanda
authors.initials: A
authors.lastname: Galvão-de Almeida
authors.affiliation: Graduate Program in Medicine and Health, Universidade Federal da Bahia, Salvador, BA, Brazil.
authors.forename: Paula
authors.initials: P
authors.lastname: Studart
authors.affiliation: Graduate Program in Medicine and Health, Universidade Federal da Bahia, Salvador, BA, Brazil.
authors.forename: Marlos V
authors.initials: MV
authors.lastname: Rocha
authors.affiliation: Program of Mood and Anxiety Disorders, Universidade Federal da Bahia, Salvador, BA, Brazil.
authors.forename: Frederico L
authors.initials: FL
authors.lastname: Lopes
authors.affiliation: Graduate Program in Medicine and Health, Universidade Federal da Bahia, Salvador, BA, Brazil.
authors.forename: Ângela
authors.initials: Â
authors.lastname: Miranda-Scippa
mesh_terms: D015897:Comorbidity; D006801:Humans; D009771:Obsessive-Compulsive Disorder / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology; D010554:Personality Disorders / Q000145:classification / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology