PubMed · 9519112
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J A Powell, J R Geddes. 1997. Evidence-based psychiatry.. https://doi.org/10.1192/bjp.171.6.586c
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The defining clinical features of acute and transient psychotic disorders (ICD-10: F23) are an acute onset and a duration of psychotic symptoms not exceeding 1-3 months. Previous empirical investigations show that patients with this diagnosis have a favourable prognosis, but also a high risk of relapses (58-77%). The diagnostic stability in the further course of illness seems to be low (34-73%) with a frequent diagnostic change to schizophrenia and affective disorders being observed. As yet, data from controlled clinical trials regarding therapy do not exist. The implications for the treatment of acute and transient psychotic disorders are discussed with this background.