Abstract
Anxiety disorders in patients with Parkinson's disease (PD) are often missed due to an overlap with other non-motor symptoms. The relationships between anxiety and other non-motor symptoms in PD still remain unclear. We used the Hamilton anxiety rating scale and the Non-motor Symptoms Questionnaire to measure anxiety and the complex range of non-motor symptoms in 99 PD patients. The relationships between anxiety and other PD-related non-motor symptoms were examined through regression analyses. 25% of PD patients were diagnosed with clinically relevant anxiety. Non-motor symptoms were more prominent in patients with anxiety. Depression, urinary disorders, and sleep disruption were the factors most likely to influence anxiety in PD. Our findings have revealed a strong interplay between anxiety and other non-motor symptoms of PD and have highlighted the need for a holistic approach towards the clinical treatment of this disabling condition.
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