[Controversial issues of diagnosis and theoretical concepts of schizophrenia in childhood].

The article presents modern approaches to classification, presents debatable diagnostic issues, including the differences between domestic approaches to the diagnosis of schizophrenia in childhood from foreign taxonomies. The modern hypothesis of the etiological continuum of schizophrenic and autistic spectrum disorders is discussed, as well as clinical models of manifest stages of schizophrenia in childhood, with an emphasis on the influence of the age factor on the clinic, dynamics and prognosis of diseases.