Developmental Trajectories of Early-Onset Psychotic Disorders

Early-onset psychotic disorders, defined by the emergence of psychotic symptoms before the age of 18, represent a severe and complex manifestation of schizophrenia spectrum illnesses. Developmental trajectories in these populations are marked by pronounced cognitive deficits, persistent negative symptoms and heightened risk of long-term functional impairment. Neurodevelopmental aberrations during critical periods of brain maturation confer vulnerability, with early and very early onset often associated with greater neurocognitive disruption and poorer educational and social outcomes. Patterns of illness progression vary, with some young people showing sustained remission under tailored interventions, while others develop treatment resistance, chronic disability and reliance on supported living. A neurodevelopmental perspective underlines the interplay of genetic liability, environmental stressors and synaptic pruning processes, emphasising the need for age-sensitive diagnostic instruments, early identification of prodromal signs and coordinated care pathways that bridge child, adolescent and adult services.

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Developmental Trajectories of Early-Onset Psychotic Disorders publication trend

The graph below shows the total number of articles in developmental trajectories of early-onset psychotic disorders across all publications each year (not limited to Nature Index journals).

Technical terms

Early-onset psychosis: Onset of psychotic symptoms before age 18, encompassing childhood and adolescent presentations of schizophrenia spectrum disorders.

Negative symptoms: Deficits of normal emotional and behavioural functions such as blunted affect, avolition and social withdrawal, often predictive of poorer outcomes.

Cognitive impairment: Reductions in intellectual ability, memory, attention and executive function frequently observed in first-episode early-onset psychosis.

Duration of untreated psychosis (DUP): Interval between emergence of psychotic symptoms and initiation of antipsychotic treatment; shorter DUP is associated with improved prognosis.

Treatment-resistant schizophrenia (TRS): Failure to respond adequately to two or more antipsychotic medications of sufficient dose and duration, indicating need for clozapine consideration.

References

1. Umbrella Review: Atlas of the Meta-Analytical Evidence of Early-Onset Psychosis. Journal of the American Academy of Child & Adolescent Psychiatry (2024).
2. Identification and treatment of individuals with childhood-onset and early-onset schizophrenia. European Neuropsychopharmacology (2024).
3. Effect of onset age on the long-term outcome of early-onset psychoses and other mental disorders: a register-based Northern Finland Birth Cohort 1986 study. European Child & Adolescent Psychiatry (2023).
4. A Neurodevelopment Approach for a Transitional Model of Early Onset Schizophrenia. Brain Sciences (2021).