Restless legs in Tourette syndrome

Area of Science:

• Neuroscience
• Genetics
• Clinical Neurology

Background:

• Restless legs syndrome (RLS) and Tourette's syndrome (TS) exhibit overlapping phenomenological features, specifically sensations alleviated by movement.
• Despite shared characteristics, the relationship and potential comorbidities between RLS and TS remain underexplored in scientific literature.

Purpose of the Study:

• To investigate the prevalence of RLS in individuals diagnosed with Tourette's syndrome (TS) or chronic tics.
• To examine the association between RLS in probands and RLS in their parents, exploring potential familial or genetic links.
• To identify comorbidities associated with RLS within a cohort of TS probands and their families.

Main Methods:

• A cohort of 144 probands diagnosed with TS or chronic tics was recruited for the study.
• Family history, including the presence of RLS, was collected from both probands and their parents.
• Statistical analysis was performed to determine the prevalence of RLS and its correlation with parental RLS and TS diagnosis.

Main Results:

• Restless legs syndrome (RLS) was identified in 10% of the probands with Tourette's syndrome (TS).
• A higher prevalence of RLS was observed in the parents of probands, with 23% reporting the condition.
• A significant association was found between RLS in probands and the presence of RLS in their mothers, but not fathers.

Conclusions:

• The findings suggest a potential maternal factor contributing to the expression of Tourette's syndrome (TS), possibly linked to Restless Legs Syndrome (RLS).
• The study highlights the importance of considering RLS as a comorbidity in TS and exploring familial patterns.
• Further research is warranted to elucidate the specific genetic or environmental mechanisms underlying the RLS-TS association.