title: Psychopathology of catatonic speech disorders and the dilemma of catatonia: a selective review.
abstract: OBJECTIVE
  Over the past decade there has been an upsurge of interest in the prevalence, nosological position, treatment response and pathophysiology of catatonia. However, the psychopathology of catatonia has received only scant attention. Once the hallmark of catatonia, speech disorders--particularly logorrhoea, verbigeration and echolalia--seem to have been neglected in modern literature. The aims of the present paper are to outline the conceptual history of catatonic speech disorders and to follow their development in contemporary clinical research.
  
  
  METHODS
  The English-language psychiatric literature for the last 60 years on logorrhoea, verbigeration and echolalia was searched through Medline and cross-referencing. Kahlbaum, Wernicke, Jaspers, Kraepelin, Bleuler, Kleist and Leonhard's oft cited classical texts supplemented the search.
  
  
  RESULTS
  In contrast to classical psychopathological sources, very few recent papers were found on catatonic speech disorders. Current clinical research failed to incorporate the observations of traditional descriptive psychopathology.
  
  
  CONCLUSIONS
  Modern catatonia research operates with simplified versions of psychopathological terms devised and refined by generations of classical writers.
authors.affiliation: Department of Psychiatry, Chinese University of Hong Kong.
authors.forename: G S
authors.initials: GS
authors.lastname: Ungvari
authors.forename: E
authors.initials: E
authors.lastname: White
authors.forename: A H
authors.initials: AH
authors.lastname: Pang
mesh_terms: D002389:Catatonia / Q000145:classification / Q000175:diagnosis* / Q000523:psychology; D003937:Diagnosis, Differential; D004454:Echolalia / Q000145:classification / Q000175:diagnosis / Q000523:psychology; D006801:Humans; D019965:Neurocognitive Disorders / Q000145:classification / Q000175:diagnosis / Q000523:psychology; D013064:Speech Disorders / Q000145:classification / Q000175:diagnosis* / Q000523:psychology; D014705:Verbal Behavior