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Effectiveness bulletin |
Cochrane Schizophrenia Group, Oxford, UK
Paul Wilson, research fellow, Simon Gilbody, research fellow, Anne-Marie Bagnall, research fellow, Ruth Lewis, research fellow
NHS Centre for Reviews and Dissemination, University of York,
Paul Wilson, NHS Centre for Reviews and Dissemination, University of York, York YO1 5DD, UK Email: pmw7@york.ac.uk This paper summarises the research evidence presented in a recent issue of Effective Health Care on drug treatments for schizophrenia.1
Background
Schizophrenia is an illness or a group of illnesses affecting language, planning, emotion, perceptions, and movement. In the UK, approximately 250 000 people suffer from schizophrenia or a schizophrenia-like illness.2
A quarter of those who have experienced an episode of schizophrenia recover and the illness does not recur. Another 25% experience an unremitting illness. The remaining 50% have a recurrent illness, but with long episodes of considerable recovery from positive symptoms such as delusions, hallucinations, disordered thinking, and catatonic movements.3 Many with recurrent illness have enduring problems from schizophrenia such as persistent psychotic symptoms, but, for most people, the problems consist of negative symptoms such as loss of enthusiasm and emotional responsiveness, apathy, and social withdrawal.3 These negative symptoms, though intrinsic to schizophrenia, are compounded by the adverse effects of
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