Personality disorder classification
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Classification
List of Personality Disorders Defined in the DSM
The DSM-IV lists ten personality disorders, grouped into three clusters. The DSM also contains a category for behavioral patterns that do not match these ten disorders, but nevertheless exhibit characteristics of a personality disorder. This category is labeled Personality Disorder NOS (Not Otherwise Specified).
Cluster A (odd or eccentric disorders)
Cluster B (dramatic, emotional, or erratic disorders)
Cluster C (anxious or fearful disorders)
- Avoidant personality disorder
- Dependent personality disorder (not the same as Dysthymia)
- Obsessive-compulsive personality disorder (not the same as Obsessive-compulsive disorder)
Revisions and Exclusions from Past DSM Editions
The revision of the previous edition of the DSM, DSM-III-R, also contained the Passive-Aggressive Personality Disorder, the Self-Defeating Personality Disorder, and the Sadistic Personality Disorder. Passive-Aggressive Personality Disorder is a pattern of negative attitudes and passive resistance in interpersonal situations. Self-defeating personality disorder is characterised by behaviour that consequently undermines the person's pleasure and goals. Sadistic Personality Disorder is a pervasive pattern of cruel, demeaning, and aggressive behavior. These categories were removed in the current version of the DSM, because it is questionable whether these are separate disorders. Passive-Aggressive Personality Disorder and Depressive personality disorder were placed in an appendix of DSM-IV for research purposes.