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Original Articles
- Seasonal variation in vestibular neuritis in Korea: a nationwide population-based cohort study
- Chul-Young Yoon, Young Jun Seo, Ji-Yun Park
- Res Vestib Sci. 2025;24(1):37-45. Published online March 14, 2025
- DOI: https://doi.org/10.21790/rvs.2025.006
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Abstract
PDF - Objectives
This study was performed to investigate seasonal variation in the incidence of vestibular neuritis (VN) without recent steroid treatments using nationwide health insurance data. The aim of the study is to elucidate whether seasonal trends can inform optimized diagnostic and treatment strategies for VN.
Methods
A retrospective analysis was conducted using data from the Health Insurance Review and Assessment Service (HIRA) in South Korea from 2007 to 2022. Patients diagnosed with VN were identified using specific operational criteria. Seasonal trends were evaluated by analyzing monthly, quarterly, and seasonal variations in VN incidence, stratified by age and sex.
Results
Out of 237,673 VN patients identified, our analysis revealed significant seasonal variations in incidence, with a notable decline during winter months—especially in February—and an increase during the spring. These patterns were consistent across sex and age groups.
Conclusions
This nationwide study demonstrates that VN exhibits distinct seasonal variations that have significant implications for clinical practice. These results indicate a potential influence of seasonal factors on the occurrence of VN and contribute to more efficient allocation of healthcare resources. Future prospective studies are warranted to further elucidate the mechanisms behind these seasonal differences.
- Various symptoms and signs of vestibular paroxysmia in a tertiary neurotologic clinic: a retrospective comparative study
- Tae Uk Cheon, Eun Hye Cha, Yehree Kim, Hong Ju Park
- Res Vestib Sci. 2024;23(4):147-155. Published online December 15, 2024
- DOI: https://doi.org/10.21790/rvs.2024.021
- 753 View
- 22 Download
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Abstract
PDF
Supplementary Material - Objectives
Vestibular paroxysmia (VP) is characterized by brief episodes of vertigo due to neurovascular cross-compression (NVCC) of the eighth cranial nerve. This study aimed to analyze the clinical features of VP patients in a tertiary neurotologic clinic using the 2008 and 2016 diagnostic criteria and to compare these features.
Methods
A retrospective review was conducted on patients diagnosed with definite or probable VP at the Asan Medical Center from May 2012 to May 2013. Patients underwent comprehensive evaluations including history taking, physical examination, audiometry, vestibular function tests, and magnetic resonance imaging (MRI). The 2008 and 2016 diagnostic criteria for VP were applied, and clinical characteristics were compared.
Results
Nineteen patients were included (14 females and five males; mean age, 57.9±14.5 years). According to the 2008 criteria, 17 patients were diagnosed with definite VP and two with probable VP; however, using the 2016 criteria, nine were definite and two were probable VP. NVCC was observed in 88.9% of patients under the 2016 criteria. MRI revealed NVCC predominantly involving the anterior inferior cerebellar artery. Patients with cerebellopontine angle (CPA) tumors presenting with VP-like symptoms responded to medication.
Conclusions
The 2016 diagnostic criteria for VP allow for a syndromic diagnosis based solely on clinical features. Neurovascular contact is commonly observed in VP patients, and CPA tumor can present VP-like symptoms and respond to carbamazepine. Although MRI is not included in the current criteria, it can be beneficial in diagnosis by identifying neurovascular contact and distinguishing CPA tumors.
- Quantifying the Prevalence of Acute Vestibular Neuritis through Big Data Analysis
- Chul Young Yoon, Seulgi Hong, Ji-Yun Park, Young Joon Seo
- Res Vestib Sci. 2023;22(3):68-76. Published online September 15, 2023
- DOI: https://doi.org/10.21790/rvs.2023.22.3.68
- 2,693 View
- 66 Download
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Abstract
PDFSupplementary Material
- Objectives
Big data analytics in healthcare research have gained momentum, offering unprecedented opportunities to investigate complex medical conditions like acute vestibular neuritis (AVN). However, an inappropriate definition can introduce bias and inaccuracies into prevalence estimation, making the results unreliable and hindering cross-study comparisons. The Health Insurance data in South Korea will be used to create a robust operational definition for AVN.
Methods
The study utilized the National Patients Sample dataset from the Health Insurance Review and Assessment Service (HIRA) of the Republic of Korea. The operational definition of AVN was defined using the HIRA data, which includes specific codes for diagnosis, testing, and medications. The revised categorization scheme for AVN was presented as case 1 through case 5, with criteria for each category.
Results
The optimal conditions are deemed to be those that encompass the outcomes of both case 5 and case 1-1, encompassing all conditions. The study also provided prevalence estimates for subgroups based on demographic factors (age, sex), and found a consistent pattern throughout all years, sex, and age.
Conclusions
The study analyzed the prevalence of AVN in case 1 and case 5, which were similar to the reference prevalence of 3.5 per 100,000 people reported in other countries. The study’s results are encouraging for several reasons, including the validity of the operational definitions used, and the agreement between the study’s prevalence estimates and the reference prevalence. The operational definition in statistics, in the context of big data, serves as a precise and standardized criterion.
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