Psychotic disorders in ICD-11.

In the process of revising ICD-10, the World Health Organization (WHO) has appointed a Working Group on the Classification of Psychotic Disorders (WGPD). Several changes to the classification criteria of schizophrenia and other primary psychotic disorders have been proposed with the aim of increasing the clinical utility, reliability and validity of the diagnostic classification. These proposals will be tested in field trials and subsequently revised according to the needs of clinical practice before final publication in 2015. The main proposals include the following: change of the chapter title, the replacement of the present schizophrenia subtypes with symptom specifiers, a revision of course specifiers, the inclusion of stricter diagnostic criteria for schizoaffective disorder, and a reorganization of acute and transient psychotic disorders and delusional disorders. The proposals for ICD-11 are compared with those for the corresponding DSM-5 chapter.