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Objective <p>This study aimed to retrospectively evaluate the prevalence of COVID-19 infection among patients with Parkinson’s disease (PD), along with the clinical course and factors associated with mortality.</p> Methods <p>A total of 1,786 patients diagnosed with Parkinson’s disease and registered at our hospital were screened. Among these, 222 had undergone PCR testing for COVID-19, of whom 76 tested negative and 152 tested positive, indicating a COVID-19 prevalence of 8.51% in the PD population. Due to insufficient data, 63 of the COVID-19 positive patients were excluded. The final study cohort included 177 patients: 89 patients with PD (50.3%) and 88 age- and sex-matched controls (49.7%). Clinical, laboratory, and prognostic parameters were compared between groups.</p> Results <p>The prevalence of dementia was significantly higher in the PD group. Mortality at both 28 and 90 days was also significantly increased among patients with PD. Notably, those receiving combined therapy with dopamine agonists and levodopa had lower mortality rates at both time points. In patients who died within 28 or 90 days, levels of age, neutrophil count, lymphocyte count, D-dimer, ferritin, C-reactive protein (CRP), and troponin differed significantly compared to survivors.</p> Conclusion <p>Patients with Parkinson’s disease represent a vulnerable population at increased risk for adverse outcomes from COVID-19. Close clinical monitoring, continuous dopaminergic treatment, and a personalized approach are essential for optimizing management during COVID-19 infection.</p>

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Prevalence of COVID-19 in patients with parkinson’s disease and the impact of parkinson’s disease on COVID-19 prognosis

  • 期刊论文

  • 发表日期：

    2025年9月9日

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  • Demet Yildiz,
  • Nilüfer Büyükkoyuncu Pekel,
  • Melih Yüksel,
  • Aksel özdemir,
  • Ebru çetin kenan,
  • Muhammed Furkan öztürkci

摘要

Objective

This study aimed to retrospectively evaluate the prevalence of COVID-19 infection among patients with Parkinson’s disease (PD), along with the clinical course and factors associated with mortality.

Methods

A total of 1,786 patients diagnosed with Parkinson’s disease and registered at our hospital were screened. Among these, 222 had undergone PCR testing for COVID-19, of whom 76 tested negative and 152 tested positive, indicating a COVID-19 prevalence of 8.51% in the PD population. Due to insufficient data, 63 of the COVID-19 positive patients were excluded. The final study cohort included 177 patients: 89 patients with PD (50.3%) and 88 age- and sex-matched controls (49.7%). Clinical, laboratory, and prognostic parameters were compared between groups.

Results

The prevalence of dementia was significantly higher in the PD group. Mortality at both 28 and 90 days was also significantly increased among patients with PD. Notably, those receiving combined therapy with dopamine agonists and levodopa had lower mortality rates at both time points. In patients who died within 28 or 90 days, levels of age, neutrophil count, lymphocyte count, D-dimer, ferritin, C-reactive protein (CRP), and troponin differed significantly compared to survivors.

Conclusion

Patients with Parkinson’s disease represent a vulnerable population at increased risk for adverse outcomes from COVID-19. Close clinical monitoring, continuous dopaminergic treatment, and a personalized approach are essential for optimizing management during COVID-19 infection.