Changes in functioning can precede a first psychotic episode. Someone may find study harder, withdraw from familiar activities or struggle with routines that were previously manageable. The important feature is change from their own baseline, not failure to meet a universal standard of achievement. These difficulties can have many explanations.
A prodrome is a period of changes that precedes a more clearly defined illness episode. In psychosis, early changes may involve functioning, mood, sleep or unusual experiences. The term is often applied retrospectively because many similar changes occur in people who never develop a psychotic disorder.
Assessment explores timing, context and associated symptoms. Depression, anxiety, physical illness, neurodevelopmental differences, stressful circumstances and substance use may contribute. A gradual decline does not establish impending schizophrenia. Early practical help can protect participation while the cause is clarified. Adjustments to workload, sleep support and assistance with appointments may be useful. Follow-up examines whether functioning improves, remains stable or changes alongside emerging experiences. Supporting the present difficulty is valuable even if psychosis never occurs. The person may also retain important strengths despite a temporary decline.
Functional change can be tracked through ordinary tasks rather than broad impressions. Attendance, completion of familiar activities and changes in social contact provide context, but each needs interpretation. A decline during bereavement or physical illness has a different meaning from one accompanied by increasing unusual experiences. The immediate support need can be addressed while the pattern remains uncertain.
Further reading: National Institute of Mental Health; NICE clinical guideline.
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