Journal
NEUROLOGICAL RESEARCH
Volume 44, Issue 6, Pages 475-482Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/01616412.2021.2018865
Keywords
Parkinson disease; restless legs syndrome; anxiety; association
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This study examined the association between RLS and anxiety in PD patients, finding that RLS is an independent risk factor for anxiety in this population. Early attention and targeted treatment for RLS may be beneficial for mood management in PD patients. Larger prospective cohort studies are needed to confirm these findings.
Objective To shed light on the association between restless leg syndrome (RLS) and anxiety in Parkinson's disease (PD) population. Methods This was a case-control study including 129 PD participants with and without anxiety who presented to the Aerospace Center Hospital in Beijing, China. Anxiety was evaluated by using the Beck Anxiety Index score. RLS was assessed using the minimal diagnostic criteria of the International Restless Legs Study Group and RLS symptom frequency and treatment. We then examined the relationship between RLS and anxiety by logistic regression models and subgroup as well as interaction analyses. Results The proportion of RLS in PD with anxiety was significantly higher in the PD without anxiety (p < 0.001). The multivariate logistic regression models indicated that PD participants with RLS had a 5.98-fold higher risk of anxiety in PD than those without RLS (OR, 6.98; 95% CI, 2.77-17.59). Subgroup analyses indicated that PD with RLS tended to be associated with a greater risk of anxiety in all stratified subgroups (adjusted ORs >1). Furthermore, the interaction analyses revealed no interactive role in the association between RLS and anxiety. Conclusions The present case-control study suggests that RLS is an independent risk factor for anxiety in PD patients. Early attention and targeted treatment for RLS may be necessary for mood management in PD. Larger prospective cohort studies are wanted to validate these findings.
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