Schizotypal personality disorder
Schizotypal personality disorder is identified as a personality disorder characterized by social isolation, as well the exhibition of odd behavior and thinking, often accompanied by unconventional belief systems.  There is often a high rate of comorbidity with other personality disorders, which may be due to considerable criteria overlap with other personality disorders, specifically avoidant personality disorder and paranoid personality disorder.  Traits of paranoid ideation and unusual experiences tend to remain stable over time, while odd behavior and constricted affect are the least prevalent and most changeable.
Note: The American Psychiatric Association, which publishes the Diagnostic and Statistical Manual of Mental Disorders, forbids the unauthorized reproduction of their diagnostic criteria. A narrative of the DSM-IV-TR criteria follows.
- American Psychiatric Association. (2000). Diagnostic and Statistical Manual of Mental Disorders. American Psychiatric Press: Washington DC
- McGlashan, T., et al. (2000). The collaborative longitudinal personality disorders study: Baseline axis I/II and II/II diagnostic co-occurrence. Acta Psychiatrica Scandinavica, 102, 256-264.
- McGlashan TH, Grilo CM, Sanislow CA, et al (2005). "Two-year prevalence and stability of individual DSM-IV criteria for schizotypal, borderline, avoidant, and obsessive-compulsive personality disorders: toward a hybrid model of axis II disorders". Am J Psychiatry 162 (5): 883–9. DOI:10.1176/appi.ajp.162.5.883. PMID 15863789. Research Blogging.
- Schulz SC, Schulz PM, & Wilson WH. (1988). Medication treatment of schizotypal personality disorder. Journal of Personality Disorders 2 (1): 1-13.
|Cluster A (Odd): Schizotypal | Schizoid | Paranoid|
Cluster B (Dramatic): Antisocial | Borderline | Histrionic | Narcissistic
Cluster C (Anxious): Dependent | Obsessive-Compulsive | Avoidant