Schizotypal personality disorder

Schizotypal personality disorder, or simply schizotypal disorder, is a personality disorder characterized by a need for social isolation, anxiety in social situations, with bizarre thoughts or behaviour as well as delusions.



Although it is listed in the diagnostic and Statistical Manual of mental disorders (DSM-IV-TR) on the axis II, schizotypal personality disorder is widely perceived as a disorder of the “spectrum of schizophrenia”. Statistics indicate that this disorder is much more common among individuals with schizophrenia than in individuals with other mental disorder or not suffering from a disorder necessarily any. Technically speaking, schizotypal personality disorder is an “extended phenotype” that helps geneticists to trace the genetic transmission of genes involved in schizophrenia.

There are a dozen studies showing that individuals with schizotypal personality disorder have a point similar to individuals with schizophrenia on a very high neuropsychological tests rank. Cognitive disorders in patients are similar, but somewhere less important, those of the patients with schizophrenia.

Society and environment

Individuals with schizotypal, such as personality disorder to schizophrenia, patients can be sensitive and hostile criticism.

Kinship, premature separations and neglect during childhood may also lead to the development of characteristics schizotypiques.

Diagnostic criteria

The diagnostic and Statistical Manual of mental disorders (DSM-IV-TR) describes as a general mode of social and interpersonal deficits as schizotypal personality disorder marked by acute discomfort and reduced skills in relations close, perceptual and cognitive distortions, and eccentric behaviour. The disorder appears early adulthood and is present in various contexts, as evidenced by at least five of the following symptoms:

  • ideas of reference (excluding delusions of reference);
  • bizarre beliefs or thinking magical influence behavior and are not in relation to the standards of a cultural group.
  • unusual perceptions, including bodily illusions;
  • thinking and bizarre language;
  • suspicious ideation or attempt;
  • inadequate or affects poverty;
  • behavior or look weird, eccentric or peculiar;
  • lack of close friends or confidants outside of the parents of the first degree;
  • excessive anxiety in social situations that does not decrease when the subject is familiar with the situation and due to fears persecution rather than a negative judgment of yourself.


The term specific schizotype is credited by Sandor Rado in 1956 as an abbreviation of schizophrenic phenotype.

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