[Current and unresolved problems in the differential diagnosis of schizophrenia and borderline states in childhood].

The main difficulties in differential diagnosis of slowly progressing schizophrenia and borderline statess (schizoid psychopathy at the period of its formation, neurotic states, residual-organic states with pseudoautistic and heboid traits) in children and adolescents are discussed. A number of differential-diagnostic criteria are given. Unsolved problems of psychopathology and clinical symptomatology are listed, which create objective difficulties in the solution of the questions of differential diagnosis of slowly progressing schizophrenia and borderline states in childhood.