Can stress trigger Parkinson's disease?

Can emotional stress trigger Parkinson's disease? This idea is compelling but not new. More than 100 years ago, Gowers wrote that prolonged anxiety and emotional shock are the most common antecedents of Parkinson's disease and advised his patients to refrain from all causes of mental strain and of physical exhaustion. More recently, several authors have speculated about the role of emotional stress in Parkinson's Disease...

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