[Hebephrenia - a viable psychopathological construct?].

Ewald Hecker was the first psychiatrist to describe the disease entity of hebephrenia in some detail, focusing mainly on disturbances of affect. Later Emil Kraepelin and Eugen Bleuler saw hebephrenia as a subtype of dementia praecox or schizophrenia. Willy Mayer-Gross and Karl Leonhard characterized hebephrenia with highly differentiated psychopathological descriptions, whereas this construct only played a minor role in the works of Klaus Conrad and Kurt Schneider. The International Classification of Diseases (ICD-10) lists hebephrenia as a subtype of schizophrenia but in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) no subtypes of schizophrenia are mentioned and the concept of hebephrenia is thus lost. Hebephrenia can be seen as an ideal type describing a psychopathological course pattern. This construct can be useful to conceptualize a group of disorders of affect which otherwise escape description, especially since these psychopathological alterations of affect are difficult to operationalize. To have a viable concept of these disorders is relevant for the prognosis and therapy planning. If the concept of hebephrenia is abolished, important psychopathological knowledge might be lost for future generations of psychiatrists.