Sleep disturbances in youth at-risk for serious mental illness.

AIM: To investigate sleep behaviours of youth at-risk for serious mental illness (SMI). METHODS: This study included 243 youth, ages 12 to 25:42 healthy controls, 41 asymptomatic youth at-risk for mental illness (stage 0); 53 help-seeking youth experiencing distress (stage 1a) and 107 youth with attenuated syndromes (stage 1b). The Pittsburgh Sleep Quality Index was used to assess sleep dysfunction. RESULTS: Stage 1b individuals indicated the greatest deficit in global sleep dysfunction (F = 26.18, P < .0001). Stages 1a and 1b reported significantly worse subjective sleep quality, a longer sleep latency, increased use of sleep medications as well as greater daytime dysfunction compared to the asymptomatic groups. CONCLUSION: Research investigating sleep behaviours of youth considered to be at-risk for SMI is limited. This study provides early evidence that sleep disturbances are worse for individuals considered to be at higher risk of illness development.