Sleep Disturbances and Behavioral Problems in Children and Adolescents with Autism Spectrum Disorder—A Systematic Review

Background/Objectives: Sleep disturbances are among the most prevalent and persistent comorbidities in children and adolescents with autism spectrum disorder (ASD), affecting up to 83% of this population. These disturbances not only impact the quality of life but are increasingly recognized as significant contributors to behavioral dysregulation. Methods: This systematic review synthesizes evidence from 26 studies published between 2010 and 2024, examining the association between sleep problems and behavioral outcomes in individuals with ASD aged 2 to 18 years. Results: The findings reveal consistent associations between sleep-onset insomnia, night walking, bedtime resistance, and various behavioral difficulties, including aggression, hyperactivity, and emotional dysregulation. Internalizing symptoms and exacerbation of core ASD features were also linked to chronic sleep problems. Studies employing objective sleep measures, such as actigraphy and polysomnography, further supported these associations by identifying disruptions in sleep architecture correlated with behavioral severity. While most included studies were of moderate to high methodological quality, the limited number of randomized controlled trials and heterogeneity of sleep and behavior assessment tools highlight the need for standardization. Conclusions: Overall, the review emphasizes the importance of routine sleep evaluation in ASD clinical care and supports targeted sleep interventions as a potential strategy to reduce behavioral problems and improve developmental outcomes.