Incidence of anxiety disorders following Parkinson’s disease: a population-based cohort study

Background Parkinson’s disease is a progressive neurodegenerative disorder in which non-motor psychiatric symptoms are common. Anxiety disorder is associated with poorer clinical outcomes and reduced quality of life in Parkinson’s disease, yet population-based evidence on the risk of newly diagnosed anxiety disorder after Parkinson’s disease remains limited. Methods We conducted a nationwide population-based matched cohort study using data from the Korean National Health Insurance Service betwee