Insomnia Symptoms and Psychopathology in Individuals at Clinical High Risk for Psychosis

AIM: Insomnia is common in the clinical course of schizophrenia, including in individuals at clinical high risk for psychosis (CHR-P). We previously found associations between insomnia and psychosis-risk symptoms in CHR-P. We attempted to replicate findings in an independent cohort. METHOD: We explored associations between insomnia and psychosis-risk symptoms in CHR-P individuals in the Accelerating Medicines Partnership Schizophrenia (AMP SCZ) program (n = 269). We investigated relationships between insomnia and psychosis-risk symptoms (Brief Psychiatric Rating Scale [BPRS]). RESULTS: The prevalence of any terminal and initial insomnia at AMP SCZ baseline was 28% and 38%, respectively. After controlling for potential confounders, insomnia was a significant indicator of higher BPRS total (β = 0.33) and positive (β = 0.22), affect (β = 0.34), and activation (β = 0.13) subscale scores. DISCUSSION: Insomnia is prevalent and associated with psychosis-risk symptoms in CHR-P individuals. Findings are clinically relevant and highlight the need for more rigorous assessment and treatment of insomnia in this population.