title: Were Langfeldt's schizophreniform psychoses really affective?
abstract: Langfeldt's cases of schizophreniform psychoses were reclassified according to the ICD-9 and DSM-III-R diagnostic systems. The main purpose was to reexamine the validity of his concept of 'schizophreniform psychoses' to see whether it supported the existence of a 'third psychosis', and whether his material could be helpful in identifying good prognostic features in schizophrenia. Most of the schizophreniform psychoses turned out to be affective disorders with psychotic features. The number of other psychotic disorders was too small to facilitate a more thorough examination.
authors.affiliation: Department of Psychiatry, University of Oslo, Norway.
authors.forename: C A
authors.initials: CA
authors.lastname: Guldberg
authors.forename: A A
authors.initials: AA
authors.lastname: Dahl
authors.forename: H
authors.initials: H
authors.lastname: Hansen
authors.forename: A L
authors.initials: AL
authors.lastname: Bergem
mesh_terms: D005500:Follow-Up Studies; D006801:Humans; D008137:Longitudinal Studies; D019964:Mood Disorders / Q000175:diagnosis / Q000523:psychology*; D011618:Psychotic Disorders / Q000145:classification* / Q000175:diagnosis / Q000523:psychology; D012559:Schizophrenia / Q000175:diagnosis