Abstract
To assess the association between incident Parkinson disease (PD) and subsequent incident epileptic seizures. We conducted a retrospective cohort study with a nested case-control analysis using data from the U.K. Clinical Practice Research Datalink. We identified patients aged ≥40 years with an incident diagnosis of PD between 1995 and 2016 and a matched comparison group of PD-free individuals. We calculated crude incidence rates (IRs) with 95% confidence intervals (CIs) of epileptic seizures in PD patients and the PD-free comparison group, and corresponding crude incidence rate ratios (IRRs). In the nested case-control analysis, we calculated adjusted odds ratios (adj. ORs) of incident PD among cases with incident epileptic seizures and seizure-free controls overall and stratified by various seizure-provoking comorbidities. Among 23,086 incident PD patients and 92,343 PD-free individuals, we identified 898 patients with incident epileptic seizures. The crude IR of epileptic seizures in PD patients was 266.7/100,000 person-years (95% CI = 235.6-297.7), and in PD-free individuals it was 112.4/100,000 person-years (95% CI = 103.5-121.3; IRR = 2.37, 95% CI = 2.06-2.73). The adj. OR of epileptic seizures was 1.68 (95% CI = 1.43-1.98) in PD patients compared with PD-free individuals. PD patients with comorbid brain disorders (adj. OR = 12.36, 95% CI = 8.74-17.48) or with > 1 seizure-provoking comorbidity (adj. OR = 13.24, 95% CI = 10.15-17.25) were at the highest risk of epileptic seizures compared with PD-free individuals with no seizure-provoking comorbidities. This study suggests that incident PD is associated with an increased risk of incident epileptic seizures. Ann Neurol 2018;83:363-374.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.