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[Prodromal symptoms in schizophrenia]

G Huber1

  • 1Universitäts-Nervenklinik Bonn, Bonn, Venusberg.

Fortschritte Der Neurologie-Psychiatrie
|April 1, 1995
PubMed
Summary

This review examines six decades of research on precursor stages of schizophrenic and schizoaffective psychoses. It highlights the evolution of concepts from early precursors to basic symptoms, emphasizing experiential deficits over behavioral changes.

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Area of Science:

  • Psychiatry
  • Psychopathology
  • Clinical Psychology

Context:

  • The study reviews six decades of research on the phenomenology and occurrence of precursor stages for schizophrenic and schizoaffective disorders.
  • It traces the historical development of concepts, from Mayer-Gross's early classifications to the later 'basic symptom' concept.

Purpose:

  • To synthesize findings on the occurrence, frequency, and phenomenology of early stages of schizophrenic and schizoaffective psychoses.
  • To differentiate between behavioral 'trema' and experiential 'basic symptoms' in precursor stages.

Summary:

  • Early schizophrenia research distinguished between uncharacteristic and characteristic precursors.
  • The concept of 'basic symptoms' emerged, focusing on dynamic and cognitive deficiencies, often recognized through patient self-reports.
  • Standardized assessments like the Frankfurt Questionnaire (FBF) and Bonn Schedule for the Assessment of Basic Symptoms (BSABS) were developed based on these experiential deficits.

Impact:

  • Provides a historical overview of evolving concepts in schizophrenia precursor research.
  • Clarifies the distinction between behavioral and experiential symptoms in early psychosis.
  • Highlights the importance of self-reported experiential deficits for diagnosis and assessment.

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