Schizotypal personality disorder is situated in the middle of a spectrum of related disorders, with schizoid personality disorder on the milder end and schizophrenia on the more severe end. It is inserted to schizotypal disorders (F21), but not to personality disorders (F60). Clinical definitions of this disorder correspond to common definitions of all schizotypal disorders, but there is not integral conception of schizotypal personality and its place in “schizophrenic spectrum”.

To define clinical features and a place of schizotypal personality disorder among disorders of schizophrenic spectrum.

Cohort of 35 patients with schizotypal disorders were studied by clinical psychopathological and experimental psychological methods.

We found that schizotypal personality disorder takes an intermediate storage between personality disorder and schizophrenia as it includes some special features of schizophrenia. But it has stabile character without typical for schizophrenia course and moulds by ways distinguishing from personality disorder.

The results let us guess that we can consider schizotypal personality disorder as acquired personality peculiarities in the result of schizophrenic process in continuum of mild states not reached to residual schizophrenia with distinct deficit symptoms (20.5)