title: Langfeldt's schizophreniform psychoses fifty years later.
abstract: As a result of follow-up studies published in 1937 and 1939, Langfeldt divided schizophrenia into two groups; 'typical schizophrenia' which had a poor outcome, and the 'schizophreniform psychoses' which had a less typical clinical picture of schizophrenia and a good outcome. Langfeldt's cases of schizophreniform psychoses were reclassified according to the ICD-9 and DSM-III-R diagnostic systems. Most of the schizophreniform psychoses did not appear 'schizophrenia-like' at all, but turned out to be mainly affective disorders. Those included in Langfeldt's diagnosis of 'schizophreniform psychoses' were found to be too heterogenous to validate the existence of this syndrome.
authors: Department of Psychiatry, University of Oslo, Norway.
authors: A L
authors: AL
authors: Bergem
authors: A A
authors: AA
authors: Dahl
authors: C
authors: C
authors: Guldberg
authors: H
authors: H
authors: Hansen
mesh_terms: D049673:History, 20th Century; D006801:Humans; D009664:Norway; D011379:Prognosis; D011569:Psychiatric Status Rating Scales; D011618:Psychotic Disorders / Q000175:diagnosis / Q000266:history*; D012559:Schizophrenia / Q000175:diagnosis / Q000266:history*