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Mental health: schizophrenia

Schizophrenia is a serious mental health problem. There are several types of schizophrenia: paranoid schizophrenia, catatonic schizophrenia, disorganised or hebephrenic schizophrenia, undifferentiated schizophrenia, residual schizophrenia, cenesthopathic schizophrenia, simple schizophrenia, and unspecified schizophrenia.

Estimates in published literature of the numbers of cases of schizophrenia vary according to which study or population is being examined. Worldwide, approximately 24 million people are affected by schizophrenia. The incidence (number of new cases per year) from different studies appears to be between 0.1 and 0.3 per 1,000 population (people). The prevalence (number of cases present at a given time) in published studies varies from about 1 to 10 per 1,000 population. 

A review carried out by NHS Quality Improvement Scotland (250Kb) looking at quality assurance of clinical services for schizophrenia estimated that there are approximately 12,000 people with schizophrenia currently in contact with services in Scotland, though it is acknowledged that this was likely to be an underestimate.

Please note: If you require the most up-to-date data available, please check the data sources directly as new data may have been published since these data pages were last updated. Although we endeavour to ensure that the data pages are kept up-to-date, there may be a time lag between new data being published and the relevant ScotPHO web pages being updated.

Page last updated: 01 March 2023
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