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Sleep in children with Williams Syndrome
Thornton B A Mason1, Raanan Arens, Jaclyn Sharman
1Sleep Center, The Children's Hospital of Philadelphia, Philadelphia, PA, USA. masont@email.chop.edu
Sleep Medicine
|September 24, 2011
Summary
Children with Williams Syndrome (WS) exhibit distinct sleep patterns, including reduced sleep efficiency and increased arousals. These sleep disturbances may be genetically influenced and linked to behavioral issues like ADHD.
Area of Science:
- Pediatric Sleep Medicine
- Neurodevelopmental Disorders
- Genetics
Background:
- Williams Syndrome (WS) is a genetic disorder associated with developmental and behavioral challenges.
- Sleep disturbances are frequently reported in children with WS, but specific polysomnographic features remain underexplored.
Purpose of the Study:
- To characterize polysomnographic sleep features in children with Williams Syndrome (WS).
- To compare sleep patterns in WS to healthy controls.
- To investigate potential associations between sleep disturbances and behavior in WS.
Main Methods:
- Overnight polysomnography and performance testing were conducted in 35 children with genetically-confirmed WS and 35 matched controls.
- Parental questionnaires assessed sleep and behavior in all participants.
Main Results:
- Children with WS demonstrated significantly reduced sleep efficiency and increased respiratory-related arousals compared to controls.
- WS subjects experienced greater difficulty initiating sleep, increased restlessness, and more frequent arousals.
- Fifty-two percent of WS subjects displayed features consistent with attention deficit-hyperactivity disorder (ADHD).
Conclusions:
- Children with Williams Syndrome exhibit significantly altered sleep architecture and quality compared to controls.
- Observed sleep differences in WS may stem from underlying genetic factors.
- Sleep disturbances in WS warrant further investigation for their impact on behavior and development.
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