診療所における良性発作性頭位めまい症例の特徴

抄録

We compiled clinical statistics for recent cases of vertigo and dizziness treated at our otolaryngological clinic. Peripheral vestibular disease accounted for 71.7% of the cases, while central vestibular disorder accounted for 6.9%. Regarding the frequency of disease, benign paroxysmal positional vertigo (BPPV) was the most common (47.7%), followed by Meniere's disease (15.4%); these frequencies were similar to those reported at other institutions. Regarding the affected part among the patients with BPPV, the most frequently encountered type was lateral canal-type BPPV (canalolithiasis type), followed by posterior canal-type, lateral canal-type (cupulolithiasis type), and anterior canal-type BPPV. The healing period did not differ significantly among the types of BPPV. The overall relapse rate was approximately 40%, which was similar to the rates reported for other institutions. Among the BPPV patients who initially received treatment in a clinical department other than otolaryngology, 50.7% received a head CT examination that was of no clinical value to the diagnosis of BPPV. It was suggested that the role of the otolaryngologist that BPPV diagnosis was possible in nystagmus views, was important in BPPV medical treatment.