목적: The video head impulse test (vHIT) provides an objective measurement of the canal function regarding the frequency and velocity ranges of normal head movements. The purpose of this study is to compare the findings of caloric and vHIT in patients with vestibular migraine (VM) and vestibular neuritis (VN). 방법:The study population consisted of 36 patients with VM who underwent vestibular examination during the interictal period and 23 patients with VN who completed vestibular examination during the acute stage and one month later. The primary outcomes were canal paresis (CP) in the caloric test and gain asymmetry (GA) during vHIT. A CP of 20% was considered to be pathologic. A difference in GA of 8% or a gain value of <0.8 during vHIT was also considered pathologic. The correlations between the degree of CP and the GA values were compared in both disorders. 결과:In 23 VN patients, the abnormal rate of pathologic CP was 100% and 65% (15 of 23), and that of abnormal vHIT was 87% (20/23) and 74% (17/23) in acute and compensated VN, respectively. Among six VN patients with normalized CP seen at the follow-up examination, five showed normal vHIT. In 36 VM patients, 15 (42%) showed abnormal CP and three (8%) showed abnormal GA. All of the patients with abnormal GA had abnormal CP. A significant positive correlation was found between CP and GA in acute and compensated VN, and there was no significant difference in the relationship between acute and compensated VN. However, pathologic GA during vHIT in VM was less frequent and did not show any significant correlation with CP. 결론:Lateral canal function for high-frequency stimuli tested by vHIT was well-preserved in VM patients, and which differed from VN where the caloric and vHIT responses were more frequently affected with a significant positive correlation. Our findings suggest that VM patients have a low-frequency-specific lateral canal dysfunction and substantial remaining canal function, especially for high-frequency stimuli.