There is a lack of comparative studies examining changes in vestibulo-ocular reflex (VOR) gain with head velocity in the video head impulse test (vHIT) of patients with vestibular neuritis (VN). Thus, the purpose of present study was to identify the effect of head impulse velocity on the gain of the VOR during the vHIT in patients with VN. Head impulse velocities ranging from 100%-200°/s [158.08 ± 23.00°/s in the horizontal canal (HC), 124.88 ± 14.80°/s in the anterior canal (AC), and 122.92 ± 14.26°/s in the posterior canal (PC) were used during vHIT trials of 32 patients with VN. Differences in VOR gain on the ipsilesional and contralesional sides according to head velocity were analyzed. The mean VOR gains in ipsilesional side were decreased to 0.47 in the HC and 0.56 in the AC, leading to marked asymmetry compared to the contralesional side; PC gain was relatively preserved at 0.82 in the ipsilesional side. The mean head impulse velocity applied during vHIT trials in each semicircular canal plane did not differ bilaterally. On the contralesional side, VOR gain was negatively correlated with head impulse velocity (R2=0.25, P=.004 in HC; R2=0.17, P=.021 in AC; R2=0.24, P=.005 in PC), while VOR gain on the ipsilesional sides of the HC and AC was not. Head impulse velocity may have a differential impact on VOR gain, depending on the degree of deficit. Increasing head velocity in vHIT may be considered to identify subtle deficits on the contralesional side of patients with VN.

OBJECTIVE: Both vestibular neuronitis (VN) and Meniere\'s disease (MD) have great impact on quality of life and are associated with a significant number of sick leave days absent from work. The aim was to assess labor market participation rate one year after hospital diagnosis of VN and MD and the use of rehabilitation measures.
METHODS: Nationwide register-based cohort study including patients with VN (n = 1,341) and MD (n = 843) and control persons matched in 1:5 with a VN cohort control (n = 6,683) and MD cohort control (n = 4,209).
RESULTS: Compared to control persons, VN patients were more likely to be single, have higher income, and a higher Charlson comorbidity index score. MD patients had a higher level of education and a higher Charlson index compared to control persons. One year after patients were diagnosed with VN, no significant difference in labor market participation was observed (p = 0.88). However, MD patients had a 10.4% reduced probability of possessing a full-time job one year after diagnosis compared to matched control persons (58.1 ± 0.5% vs. 68.5 ± 0.5%, p < 0.001). Both VN and MD patients consulted otorhinolaryngologists, general practitioners, and physiotherapists more than control persons both before and after the initial diagnosis (p < 0.01). In addition, MD patients also consulted psychologists more frequently before and after diagnosis of the disease (p < 0.01).
CONCLUSIONS: Intrahospital diagnosed MD increases the risk of leaving the labor market in opposition to VN. Both MD and VN are associated with significant expenses to the Danish health care system from the use of public rehabilitation measures and medical consultations.

BACKGROUND: Dizziness/vertigo is one of the most common symptoms for which people seek healthcare. However, the healthcare expenditure attributable to dizziness/vertigo in South Korea remains poorly understood. We investigated the healthcare costs due to six major disorders causing dizziness/vertigo using claims data.
METHODS: The healthcare costs were evaluated using all the claims data submitted to the Health Insurance Review and Assessment Service from January 1 to December 31, 2022. The six major vestibular disorders included for analysis were benign paroxysmal positional vertigo (BPPV), psychogenic/persistent postural perceptual dizziness (PPPD), vascular vertigo/dizziness (VVD), vestibular migraine (VM), Meniere\'s disease (MD), and vestibular neuritis (VN).
RESULTS: During the 1-year study period, 4.1% of adults aged 20 or older visited hospitals due to dizziness/vertigo in South Korea. Compared to the general population, the patients with dizziness/vertigo were more often elderly, female, and residents of small towns. The total healthcare cost for the six major vestibular disorders was ₩547.8 billion (approximately $406.5 million). BPPV incurred the highest annual healthcare cost (₩183.5 billion, 33.5%), followed by VVD (₩158.8 billion, 29.0%), MD (₩82.2 billion, 15.0%), psychogenic/PPPD (₩60.3 billion, 11.0%), VN (₩32.9 billion, 6.0%), and VM (₩30.1 billion, 5.5%). The mean healthcare cost per hospital visit due to dizziness/vertigo was ₩96,524 (95% confidence interval, ₩96,194-₩96,855), 30% higher than the average (₩73,948) of the overall healthcare cost per hospital visit over the same period.
CONCLUSIONS: Owing to higher healthcare costs for dizziness/vertigo and increased prevalence of dizziness/vertigo in the aged population, healthcare costs due to dizziness/vertigo will increase rapidly in South Korea. Thus, a guideline for cost-effective management of dizziness/vertigo should be established to reduce the healthcare costs due to these common symptoms.

BACKGROUND: Recently, end-point nystagmus, traditionally observed in an upright position, has been identified in the Dix-Hallpike position among healthy subjects, suggesting a physiological origin.However, its characteristics in individuals with vestibular hypofunction remain unexplored.
OBJECTIVE: To elucidate the impact of vestibular hypofunction on the characteristics of positional end-point nystagmus.
METHODS: Thirty-one patients diagnosed with acute unilateral vestibulopathy according to Bárány Society criteria were selected. A video head impulse test was conducted in all participants, followed by McClure and Dix-Hallpike maneuvers with and without gaze fixation, and with the initial position of the eye in the straight-ahead position or in the horizontal end-point position. Nystagmus direction, sense, latency, slow-phase velocity, and duration were recorded. The relationship between these characteristics and video head impulse test values was analyzed.
RESULTS: Positional end-point nystagmus was observed in 92.6% of subjects with vestibular hypofunction, significantly more than in healthy individuals. Nystagmus direction varied depending on the performed positional test and on the vestibulo-ocular reflex gains. Gaze occlusion and the initial horizontal end-point position increased its frequency.
CONCLUSIONS: Vestibular hypofunction influences the manifestation of positional end-point nystagmus. Recognizing this nystagmus can aid in resolving diagnostic uncertainties and preventing the misdiagnosis of benign paroxysmal positional vertigo in subjects with acute unilateral vestibulopathy.

Objective:To explore the correlation between the parameters of suppression head impulse paradigm（SHIMP） and changes in dizziness handicap inventory（DHI） scores. Additionally, to evaluate the degree of vertigo and prognosis of patients with acute vestibular neuritis through SHIMP parameters. Methods:Thirty-three patients with acute vestibular neuritis were enrolled for DHI evaluation, vHIT and SHIMP. A secondary DHI score were evaluated after after two weeks, once patients no longer exhibited spontaneous nystagmus. The decrease in the second DHI score was used as the efficacy index（EI）. All patients were divided into significantly effective group, effective group and ineffective group based on EI. Differences of the VOR gain values of SHIMP and the anti-compensatory saccade were compared among the three groups. Results:There were 13 cases in the significant effective group, 11 cases in the effective group, and 9 cases in the ineffective group. ①The mean gain of the horizontal semicircular canal in the significant effective group, the effective group, and the ineffective group was（0.50±0.11）, （0.44±0.12）, and（0.34±0.08）, respectively. The difference between the significant effective group and the ineffective group was statistically significant（P<0.01）. The gain of horizontal semicircular canal was positively correlated with EI（r=0.538 5, P<0.01） 。②The occurrence rate of the anti-compensatory saccade in the significant effective group, the effective group, and the ineffective group was（51.23±19.59）, （33.64±17.68）, and（13.78±11.81）, respectively. Pairwise comparisons between each group showed statistical significance（P<0.05）. The occurrence rate of anti-compensatory saccade was positively correlated with EI（r=0.658 2, P<0.01）. Conclusion:The horizontal semicircular canal gain and the occurrence rate of the anti-compensatory saccade in SHIMP for patients with acute vestibular neuritis were closely correlated with decrease in DHI score.
目的：探讨视频头脉冲抑制试验（suppression head impulse paradigm，SHIMP）的参数与眩晕障碍量表（dizziness handicap inventory，DHI）评分改变的相关性，以期通过SHIMP的相关参数来评估急性前庭神经炎的眩晕程度及预后。 方法：选取急性前庭神经炎患者33例，行DHI量表评估、vHIT和SHIMP检查，病程达2周且不伴自发性眼震时再次行DHI量表评估。以第二次DHI评分的下降幅度，作为疗效指标（efficacy index，EI）。将所有患者按照疗效分为显效、有效和无效3组。比较3组患者SHIMP的前庭眼反射增益值及反代偿扫视波出现率之间的差异。 结果：显效组13例，有效组11例，无效组9例。①在各组水平半规管增益均值比较中，显效组增益均值为（0.50±0.11）；有效组增益均值为（0.44±0.12）；无效组增益均值为（0.34±0.08）。显效组与无效组增益均值差异有统计学意义（P<0.01）。水平半规管增益值与EI呈正相关（r=0.538 5，P<0.01）；②在各组水平半规管反代偿扫视波出现率均值比较中，显效组反代偿扫视波出现率均值为（51.23±19.59）；有效组反代偿扫视波出现率均值为（33.64±17.68）；无效组反代偿扫视波出现率均值为（13.78±11.81）。各组间两两比较均差异有统计学意义（P<0.05）。水平半规管反代偿扫视波出现率与EI呈正相关（r=0.658 2，P<0.01）。 结论：急性前庭神经炎患者SHIMP检查中的增益值以及反代偿扫视波出现率与DHI评分下降幅度密切相关。.

Objective: To investigate the disease composition, clinical features, diagnosis, and treatment characteristics of vertigo in children. Methods: A total of 120 children with vertigo diagnosed and treated in the Department of Otorhinolaryngology, Children\'s Hospital, Capital Institute of Pediatrics in Beijing from February 2018 to February 2022 were retrospectively analyzed to explore the clinical characteristics of common peripheral vertigo in children and to summarize the experience of diagnosis and treatment. Results: The etiological composition of 120 cases of vertigo in children are as follows: 63 (52.5%) cases of vestibular migraine of childhood (VMC), 19 (15.8%) of recurrent vertigo of childhood (RVC), 11 (9.2%) of probable vestibular migraine of childhood (PVMC), 10 (8.3%) of secretory otitis media (SOM), 6 (5.0%) of persistent postural-perceptual dizziness (PPPD), 4 (3.3%) of benign paroxysmal positional vertigo (BPPV), 2 (1.7%) of vestibular neuritis (VN), 2 (1.7%) of Meniere\'s disease (MD), 2 (1.7%) of inner ear malformation (IEM), and 1 (0.8%) of vestibular paroxysmal syndrome (VP).The major cause of vertigo in children of different ages was different. SOM was the most important cause in preschool children, followed by RVC and VMC; VMC was the most important cause in school-age children, followed by RVC; and MD and BPPV were exclusive found in adolescents. The incidence rate of PPPD was higher in adolescents than in preschool and school-age children. Children with vertigo had good prognosis in general. Conclusions: VMC, RVC and SOM are the most common causes in vertigo in children, and their proportion was different in different aged children. Transforming abstract feelings into specific information is the skill required for collecting medical history of children with vertigo. Considering the age and cooperation of children, appropriate hearing and vestibular examination techniques are recommended. We should pay more attention to the mental health of children with vertigo and their parents.
目的： 了解儿童眩晕的病因构成、临床表现及诊疗特点。 方法： 病例系列研究。回顾性分析2018年2月至2022年2月首都儿科研究所附属儿童医院耳鼻喉科诊治的120例眩晕患儿的临床资料，探讨儿童常见眩晕的临床特点、总结诊疗经验。 结果： （1）120例儿童眩晕的病因构成：儿童前庭性偏头痛（VMC）63例（52.5%）、儿童复发性眩晕（RVC）19例（15.8%），可能性前庭性偏头痛（PVMC）11例（9.2%），分泌性中耳炎（SOM）10例（8.3%），持续性姿势-感知性头晕（PPPD）6例（5.0%）、良性阵发性位置性眩晕（BPPV）4例（3.3%），前庭神经炎（VN）2例（1.7%），梅尼埃病（MD）2例（1.7%），内耳先天性发育畸形2例（1.7%）、前庭阵发症（VP）1例（0.8%）。（2）不同的年龄阶段，儿童眩晕的病因构成不同，学龄前儿童最主要的是SOM，之后是RVC和VMC；学龄儿童则主要是VMC，之后是RVC；相较于其他年龄段，青少年期MD、BPPV，尤其是PPPD发病率更高。（3）眩晕患儿的整体预后较好。 结论： 眩晕患儿病因以VMC、RVC、SOM为主，在不同的年龄阶段病因不同。采集眩晕患儿病史的技巧是将抽象的感受转化为具体的事项。根据儿童的年龄和配合度，选择适合的听力和前庭检查，并关注眩晕患儿及家长的心理健康，将有助于临床诊治。.

OBJECTIVE: Conventionally, MRI aids in differentiating acute unilateral peripheral vestibulopathy/vestibular neuritis (AUPV/VN) from mimickers. Meanwhile, the diagnostic utility of MRIs dedicated to the inner ear remains to be elucidated for diagnosing AUPV/VN.
METHODS: We prospectively recruited 53 patients with AUPV/VN (mean age ± SD = 60 ± 15 years, 29 men). Initial MRIs were performed with a standard protocol, and an additional axial 3D-fluid-attenuated inversion recovery (3D-FLAIR) sequence was obtained 4 h after intravenous injection of gadoterate meglumine. Abnormal enhancement was defined as a signal intensity that exceeded the mean + 2SD value on the healthy side. The findings of neurotologic evaluation and MRIs were compared.
RESULTS: Overall, the inter-rater agreement for gadolinium enhancement was 0.886 (Cohen\'s kappa coefficient). Enhancement was observed in 26 patients (49%), most frequently in the vestibule (n = 20), followed by the anterior (n = 12), horizontal (HC, n = 8), posterior canal (n = 5), and superior (n = 3) and inferior (n = 1) vestibular nerves. In multivariable logistic regression analysis, the enhancement was associated with decreased HC gain in video head-impulse tests (p = 0.036), increased interaural difference in ocular vestibular-evoked myogenic potentials (p = 0.001), and a longer onset-to-MRI time span (p = 0.024). The sensitivity and specificity were 92.3% and 81.5%, respectively, with an area under the curve of 0.90 for predicting gadolinium enhancement.
CONCLUSIONS: Robust gadolinium enhancement was observed on 4-hour-delayed 3D-FLAIR images in nearly half of the patients with AUPV/VN, with a good correlation with the results of neurotologic evaluation. The positivity may be determined by the extent of vestibular deficit, timing of imaging acquisition, and possibly by the underlying etiology causing AUPV/VN. MRIs may aid in delineating the involved structures in AUPV/VN.

Vestibular neuritis occupies the third place in terms of prevalence in the structure of peripheral vestibulopathies, therefore, the choice of optimal diagnostic and differential diagnostic tactics at different stages of the disease is an urgent task.
OBJECTIVE: To optimize the diagnostic algorithm for vestibular neuritis based on an assessment of the sensitivity of clinical methods for studying vestibular function in the recovery period of the disease.
METHODS: A comprehensive assessment of the sensitivity of clinical methods for the study of vestibular function in the acute (up to 14 days: at the time of initial treatment, on the 7th and 14th day) and subacute (up to 3 months: on the 28th and 90th day) periods of the disease in 52 patients with upper vestibular neuritis was carried out.
RESULTS: The timing of the processes of restoration of vestibular function after a transferred vestibular neuritis is individual: after 14 days, restoration of vestibular function was recorded in 52% (n=27) patients, after 1 month - in 62% (n=32), after 3 months - in 71% (n=37) patients with upper vestibular neuritis. Statocoordination, statokinetic, oculomotor tests under visual control have the highest sensitivity in the acute period of vestibular neuritis, within up to 7 days from the onset of symptoms. In the subacute period of vestibular neuritis, the study of spontaneous nystagmus and nystagmus in the head shaking test retains high sensitivity only when using special tools (Frenzel goggles or videonystagmography). A decrease in the sensitivity of the head rotation test and the dynamic visual acuity test in the subacute period of vestibular neuritis is associated with the processes of central compensation and the formation of a latent saccade.
CONCLUSIONS: The sensitivity of clinical tests in patients with vestibular neuritis depends on the timing of the examination.
Вестибулярный нейронит занимает третье место по распространенности в структуре периферических вестибулопатий, поэтому выбор оптимальной диагностической и дифференциально диагностической тактики на разных стадиях заболевания представляет собой актуальную задачу.
UNASSIGNED: Оптимизировать диагностический алгоритм при вестибулярном нейроните на основании оценки чувствительности клинических методов исследования вестибулярной функции в восстановительном периоде заболевания.
UNASSIGNED: Проведена комплексная оценка чувствительности клинических методов исследования вестибулярной функции в остром (до 14 дней: на момент первичного обращения, на 7-й и 14-й день) и подостром (до 3 мес: на 28-й и 90-й день) периодах заболевания у 52 пациентов с верхним вестибулярным нейронитом.
UNASSIGNED: Сроки процессов восстановления вестибулярной функции после перенесенного вестибулярного нейронита индивидуальны: спустя 14 дней восстановление вестибулярной функции зафиксировали у 52% (n=27) пациентов, спустя 1 мес — у 62% (n=32), спустя 3 меса — у 71% (n=37) больных верхним вестибулярным нейронитом. Статокоординаторные, статокинетические, глазодвигательные тесты под контролем зрения обладают наиболее высокой чувствительностью в остром периоде вестибулярного нейронита, в сроки до 7 дней с момента дебюта симптомов. В подостром периоде вестибулярного нейронита исследование спонтанного нистагма и нистагма в тесте встряхивания головы сохраняет высокую чувствительность только при использовании специальных инструментов (очков Френзеля или видеонистагмографии). Снижение чувствительности теста поворота головы и теста динамической остроты зрения в подостром периоде вестибулярного нейронита связано с процессами центральной компенсации и формированием скрытой саккады.
UNASSIGNED: Чувствительность клинических тестов у пациентов с вестибулярным нейронитом зависит от сроков обследования.

OBJECTIVE: Acute unilateral peripheral vestibulopathy (AUPVP) is a frequent form of peripheral vestibular vertigo characterized by unilateral vestibular organ dysfunction. Diagnostic challenges in anamnesis and bedside examination can lead to potential misdiagnoses. This study investigated the sensitivity of bedside examinations in diagnosing AUPVP.
METHODS: This retrospective analysis examined 136 AUPVP inpatients at a level 3 university hospital between 2017 and 2019. Demographic data and bedside test results were collected. Instrumental otoneurological tests included caloric testing and video head impulse test (HIT). The sensitivity of each bedside parameter was computed based on the instrumental diagnostics, and statistical analyses were performed.
RESULTS: The study included 76 men and 60 women, with a mean age of 59.2 years. Spontaneous nystagmus exhibited a sensitivity of 92%, whereas the absence of skew deviation was identified with a sensitivity of 98%. Abnormal bedside HIT showed a sensitivity of 87%. The combined HINTS (HIT, nystagmus, and test of skew) had a sensitivity of 83%. The Romberg test and Fukuda test demonstrated sensitivities of 26% and 48%, respectively.
CONCLUSIONS: The sensitivity of bedside tests varied from 26% to 98%. This aligns with previous literature, highlighting the challenge of differentiating AUPVP from vestibular pseudoneuritis solely through bedside examination. Although the tests excel in excluding central causes, they are insufficient for diagnosing AUPVP with certainty. In addition, the bedside examination sensitivities vary widely, and early radiological imaging can be misleading. Therefore, this study underlines the necessity of prompt otoneurological testing for accurate exclusion of vestibular pseudoneuritis and thus improve patient outcomes.

OBJECTIVE: This study aimed to assess the correlation between the spontaneous nystagmus (SN) and the subjective visual vertical/horizontal (SVV/SVH) among patients with vestibular neuritis (VN) at the different head positions.
METHODS: Case-control study.
METHODS: Affiliated Sixth People\'s Hospital, Shanghai Jiao Tong University School of Medicine.
METHODS: This study evaluated the SVV/SVH in both healthy subjects and patients with VN. These evaluations were performed in 5 different head positions: upright, 45° tilt to the left, 90° tilt to the left, 45° tilt to the right, and 90° tilt to the right. Additionally, the intensity of SN, as measured by slow-phase velocity, was recorded.
RESULTS: In patients with VN, a significant correlation was observed between SN and SVV/SVH in an upright position. The intensity of SN was higher when the head was tilted 90° toward the affected side compared to other positions. The SVV/SVH displayed an ipsiversive shift, when the head was tilted toward both the lesion and unaffected sides, exhibiting a contraversive direction. Furthermore, the changes in position-induced SN were consistent with the displacements of SVV and SVH caused by head tilt.
CONCLUSIONS: The presence of SN in patients with VN was observed to vary across different head position. These variations could potentially be attributed to the diverse activation patterns of the mechanical properties of otolith organs that are induced by head tilts.