NICE quality standards describe high-priority areas for quality improvement in a defined care or service area. Each standard consists of a prioritised set of specific, concise and measurable statements. They draw on existing guidance, which provides an underpinning, comprehensive set of recommendations, and are designed to support the measurement of improvement.

This quality standard covers the treatment and management of psychosis and schizophrenia (including related psychotic disorders such as schizoaffective disorder, schizophreniform disorder and delusional disorder) in adults (18 years and older) with onset before the age of 60 years in primary, secondary and community care. It will not cover adults with transient psychotic symptoms. For more information see the psychosis and schizophrenia in adults topic overview.