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Longest study to date assesses cognitive impairment over time in adults with essential tremor

April 24, 2024
in Medicine
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Longest study to date assesses cognitive impairment over time in adults with essential tremor
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Essential tremor, a nervous system disorder that causes rhythmic shaking, is one of the most common movement disorders. A new study published in the Annals of Neurology reveals details on the increased risk of mild cognitive impairment (MCI) and dementia that individuals with essential tremor may face.

Essential tremor, a nervous system disorder that causes rhythmic shaking, is one of the most common movement disorders. A new study published in the Annals of Neurology reveals details on the increased risk of mild cognitive impairment (MCI) and dementia that individuals with essential tremor may face.

The research represents the longest available longitudinal prospective study of rates of MCI and dementia in people with essential tremor. The study enrolled 222 patients, 177 of whom participated in periodic evaluations over an average follow-up of 5 years.

Investigators observed a cumulative prevalence of 26.6% and 18.5% for MCI and dementia, respectively. They also noted a cumulative incidence of 18.2% and 11.2% for MCI and dementia, respectively. Each year, 3.9% of patients with normal cognition “converted” to having MCI, and 12.2% of those with MCI “converted” to having dementia.

“We know from related research that the presence of cognitive impairment in patients with essential tremor has meaningful clinical consequences. For example, patients with essential tremor who are diagnosed with dementia are more likely to need to use a walker or wheelchair, to employ a home health aide, and to reside in non-independent living arrangements than are patients with essential tremor without dementia,” said corresponding author Elan D. Louis, MD, MS, of the University of Texas Southwestern Medical Center. “With this in mind, the findings of the present study highlight the importance of cognitive screening and monitoring in patients with essential tremor. Early detection of impairment may provide opportunities for interventions that may slow further cognitive decline and improve the quality of life of patients and their families.”

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Additional Information
NOTE: 
The information contained in this release is protected by copyright. Please include journal attribution in all coverage. For more information or to obtain a PDF of any study, please contact: Sara Henning-Stout, newsroom@wiley.com.

About the Journal
Annals of Neurology , an official journal of the American Neurological Association and the Child Neurology Society, publishes original articles with a focus on diseases of the human nervous system. Articles should ideally remain of broad interest to the academic neurological community. Studies involving experimental model systems, including those in cell and organ cultures and animals, of direct translational relevance to the understanding of neurological disease are encouraged.

About Wiley
Wiley is a knowledge company and a global leader in research, publishing, and knowledge solutions. Dedicated to the creation and application of knowledge, Wiley serves the world’s researchers, learners, innovators, and leaders, helping them achieve their goals and solve the world’s most important challenges. For more than two centuries, Wiley has been delivering on its timeless mission to unlock human potential. Visit us at Wiley.com. Follow us on Facebook, Twitter, LinkedIn and Instagram.



Journal

Annals of Neurology

DOI

10.1002/ana.26927

Article Title

Prevalence of and Annual Conversion Rates to Mild Cognitive Impairment and Dementia: Prospective, Longitudinal Study of an Essential Tremor Cohort

Article Publication Date

24-Apr-2024

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