title: The Impact of Obsessive Compulsive Personality Disorder on Cognitive Behaviour Therapy for Obsessive Compulsive Disorder.
abstract: BACKGROUND
  It is often suggested that, in general, co-morbid personality disorders are likely to interfere with CBT based treatment of Axis I disorders, given that personality disorders are regarded as dispositional and are therefore considered less amenable to change than axis I psychiatric disorders.
  
  
  OBJECTIVE
  The present study aimed to investigate the impact of co-occurring obsessive-compulsive disorder (OCD) and obsessive-compulsive personality disorder (OCPD) on cognitive-behavioural treatment for OCD.
  
  
  METHODS
  92 individuals with a diagnosis of OCD participated in this study. Data were drawn from measures taken at initial assessment and following cognitive-behavioural treatment at a specialist treatment centre for anxiety disorders.
  
  
  RESULTS
  At assessment, participants with OCD and OCPD had greater overall OCD symptom severity, as well as doubting, ordering and hoarding symptoms relative to those without OCPD; however, participants with co-morbid OCD and OCPD demonstrated greater treatment gains in terms of OCD severity, checking and ordering than those without OCPD. Individuals with OCD and OCPD had higher levels of checking, ordering and overall OCD severity at initial assessment; however, at post-treatment they had similar scores to those without OCPD.
  
  
  CONCLUSIONS
  The implications of these findings are discussed in the light of research on axis I and II co-morbidity and the impact of axis II disorders on treatment for axis I disorders.
authors.affiliation: Institute of Psychiatry,Psychology and Neuroscience,King's College London,UK.
authors.forename: Olivia M
authors.initials: OM
authors.lastname: Gordon
authors.affiliation: University of Bath,UK.
authors.forename: Paul M
authors.initials: PM
authors.lastname: Salkovskis
authors.affiliation: Institute of Psychiatry,Psychology and Neuroscience,King's College London, and South LondonandMaudsley NHS Trust,UK.
authors.forename: Victoria
authors.initials: V
authors.lastname: Bream
mesh_terms: D000328:Adult; D001008:Anxiety Disorders / Q000523:psychology; D015928:Cognitive Behavioral Therapy / Q000379:methods*; D015897:Comorbidity; D003193:Compulsive Personality Disorder / Q000523:psychology / Q000628:therapy*; D004644:Emotions; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009771:Obsessive-Compulsive Disorder / Q000523:psychology / Q000628:therapy*; D010554:Personality Disorders / Q000523:psychology / Q000628:therapy; D010555:Personality Inventory; D011569:Psychiatric Status Rating Scales; D011795:Surveys and Questionnaires
keywords: Axis II; Obsessive compulsive disorder; cognitive behaviour therapy; obsessive compulsive personality disorder