Acute exogenous reaction type

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Classification according to ICD-10
F09 Unspecified organic or symptomatic mental disorder, including: Psychosis: organic onA, symptomatic onA
ICD-10 online (WHO version 2019)

The acute exogenous reaction type described by Karl Bonhoeffer (1868–1948) for the first time in 1908 represents a collective term for various acute, physically caused psychological disorders , in which the clouding of consciousness is the leading symptom - albeit not obligatory. These disorders with impaired consciousness include a. acute states of confusion , delirium and twilight states . The disorders without impaired consciousness were classified by Hans Heinrich Wieck as continuity syndromes. These include hallucinosis , acute Korsakoff syndrome , pseudoneurasthenic syndrome and the oriented twilight states . Bonhoeffer already counted them as the acute exogenous reaction type. The terminology of the acute exogenous reaction type mainly served to differentiate the acute exogenous psychoses from the endogenous psychoses and was therefore a basic term for classical German psychiatry . From a systematic point of view it was significant for the establishment of the triadic system of psychiatry . As a result of the broad definition of the reaction type, the symptomatology is to be regarded as unspecific. A large number of causes of illness are compared to a relatively small number of illnesses or illness symptoms. These symptoms are understood as a community of expression in relation to the assignment of a large number of causes of illness in the nosologically determined disease classification. The term acute organic brain psychosyndrome is synonymous with the acute exogenous reaction type .

Individual evidence

  1. Uwe Henrik Peters : Dictionary of Psychiatry and Medical Psychology . Urban & Schwarzenberg, Munich 3 1984; P. 474 - on Wb.-Lemma "Reaction types, acute exogenous".
  2. Gerd Huber : Psychiatry. Systematic teaching text for students and doctors. FK Schattauer, Stuttgart 1974, ISBN 3-7945-0404-6 ; P. 38 ff. - on head. "Physically justifiable psychoses".