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Family psychiatric morbidity of acute and transient psychotic disorders and their relationship to schizophrenia and bipolar disorder.
MedLine Citation:
PMID:  23343536     Owner:  NLM     Status:  Publisher    
BACKGROUND: Although transient psychotic disorders are currently classified as a category separate from schizophrenia (SZ) and affective disorders, their distinctive features remain uncertain. This study examines the family psychiatric morbidity of the ICD-10 category of 'acute and transient psychotic disorders' (ATPDs), pointing out differences from SZ and bipolar disorder (BD). Method From a cohort of 2.5 million persons, we identified all patients enrolled in the Danish Psychiatric Register who were ever admitted with ATPDs (n=2537), SZ (n = 10639) and BD disorder (n=5292) between 1996 and 2008. The relative risk (RR) of ATPDs, SZ and BD associated with psychiatric morbidity in first-degree relatives (FDRs) was calculated as the incidence rate ratio using Poisson regression. RESULTS: The RR of ATPDs [1.93, 95% confidence interval (CI) 1.76-2.11] was higher if patients with ATPDs had at least one FDR admitted with any mental disorder than patients without family psychiatric antecedents. An additional risk arose if they had FDRs admitted not only with ATPDs (RR 1.60, 95% CI 1.33-1.92) but also with SZ (RR 2.06, 95% CI 1.70-2.50) and/or BD (RR 1.55, 95% CI 1.23-1.96). Despite some overlap, the risk of SZ (RR 2.80, 95% CI 2.58-3.04) and BD (RR 3.68, 95% CI 3.29-4.12) was markedly higher if patients with SZ and BD had FDRs admitted with the same condition. CONCLUSIONS: These findings suggest that family psychiatric predisposition has a relatively modest impact on ATPDs and argue against a sharp differentiation of ATPDs from SZ and BD.
A C Castagnini; T M Laursen; P B Mortensen; A Bertelsen
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-24
Journal Detail:
Title:  Psychological medicine     Volume:  -     ISSN:  1469-8978     ISO Abbreviation:  Psychol Med     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1254142     Medline TA:  Psychol Med     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1-7     Citation Subset:  -    
Centre for Psychiatric Research, Aarhus University Hospital, Risskov, Denmark.
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