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Duration of remitting psychoses with acute onset. Implications for ICD-10
R Mojtabai1, V K Varma, E Susser
1Department of Psychiatry, Columbia University, New York, NY, USA. rm322@columbia.edu
Background:
The acute and transient psychotic disorders (ATPD) in ICD-10 advanced the nosology of remitting psychoses with acute onset. But the proposed criteria for ATPD--especially in regard to duration--are tentative and need to be validated.
Aims:
To evaluate: (a) the duration of remitting psychoses with acute onset; (b) the applicability of the ATPD criteria for these cases; and (c) differences in duration and ATPD diagnoses across sociocultural settings.
Method:
Data from the World Health Organization Determinants of Outcome study were used.
Results:
The 98 cases of remitting psychoses with acute onset had a modal duration of 2-4 months, with 43% falling in this range. Mainly because of this, few met the ATPD criteria. Duration and diagnostic findings were similar across settings.
Conclusions:
ATPD criteria need refinement, especially in regard to duration. Further studies aimed at early detection and assessment of onset and duration of these disorders are needed.