RLS (2002) were followed. Results: Global RLS prevalence in our ADHD patients: 36.1%. Among them,... more RLS (2002) were followed. Results: Global RLS prevalence in our ADHD patients: 36.1%. Among them, criteria of definite RLS are fulfilled in 30.8%, probable RLS in 46.1% and possible RLS in 23.1%. RLS prevalence in non-treated group: 50.0%. Definite RLS in 12.5%, probable in 62.5% and possible in 25.0% of them. RLS prevalence in treated group: 25.0%. Definite RLS in 60.0%, probable in 20.0% and possible in 20.0%. Conclusion: The prevalence of RLS symptoms in children with ADHD is higher than in normal population, according to the reviewed literature. In treated ADHD, overall RLS prevalence is only 50% of that in non-treated group, while ''Definite RLS'' prevalence is 4.8 times higher. These findings suggest: The symptoms of ADHD and RLS may be overlapping and lead to misdiagnosis of both disorders. In the same way, a lower prevalence of RLS in treated ADHD could be explained by an improvement in ADHD or in RLS symptoms. Further studies are needed to better understand these findings, as well as the specific role of the different drugs commonly used in ADHD. Acknowledgements: This study has been supported by a grant given by FISCAM.
RLS (2002) were followed. Results: Global RLS prevalence in our ADHD patients: 36.1%. Among them,... more RLS (2002) were followed. Results: Global RLS prevalence in our ADHD patients: 36.1%. Among them, criteria of definite RLS are fulfilled in 30.8%, probable RLS in 46.1% and possible RLS in 23.1%. RLS prevalence in non-treated group: 50.0%. Definite RLS in 12.5%, probable in 62.5% and possible in 25.0% of them. RLS prevalence in treated group: 25.0%. Definite RLS in 60.0%, probable in 20.0% and possible in 20.0%. Conclusion: The prevalence of RLS symptoms in children with ADHD is higher than in normal population, according to the reviewed literature. In treated ADHD, overall RLS prevalence is only 50% of that in non-treated group, while ''Definite RLS'' prevalence is 4.8 times higher. These findings suggest: The symptoms of ADHD and RLS may be overlapping and lead to misdiagnosis of both disorders. In the same way, a lower prevalence of RLS in treated ADHD could be explained by an improvement in ADHD or in RLS symptoms. Further studies are needed to better understand these findings, as well as the specific role of the different drugs commonly used in ADHD. Acknowledgements: This study has been supported by a grant given by FISCAM.
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