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J Korean Bal Soc > Volume 1(2); 2002 > Article
Journal of the Korean Balance Society 2002;1(2): 259-265.
전정기능검사에서 정상소견을 보이는 어지러운 환자들의 임상적 특징
정원호, 방은국, 홍성화, 이치규, 이현석
성균관대학교 의과대학 삼성서울병원 이비인후과학교실
The clinical characteristics of dizzy patients with normal vestibular function tests
Won Ho Chung, Eun Guk Bang, Sung Hwa Hong, Chi Kyou Lee, Hyun Seok Lee
Department of Otorhinolaryngology-Head and Neck Surgery, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea. whchung@smc.samsung.co.kr
Background and Objectives : Dizziness is a very common complaint in every day practice. The prevalence of dizziness ranges from 1.8 % in young adults to 30% in the elderly. The sensitivity of vestibular function tests is limited. It was reported that the sensitivity of electronystagmography for diagnosing peripheral vestibular disorders was variable, ranging from 46 to 74%. The objective of this study is to analyse the causes and clinical characteristics of dizzy patients who show normal vestibular function tests. Materials and methods : From January 1999 to June 2001, 375 dizzy patients with normal vestibular function tests(mean age, 49.7 years; range, 8 to 79 years) were assessed with the medical records and typed questionnaires about dizziness. Results : Dizzy patients with normal vestibular function tests were attributed to an unknown cause in 20.0% of patients, benign paroxysmal positional vertigo in 19.5%, migrainous dizziness in 11.7%, psychogenic dizziness in 10.4%, Meniere's disease in 9.6% and vertebrobasilar insufficiency in 7.2%. Conclusion : Dizzy patients with normal vestibular function tests can be evaluated by careful history taking and combined multidisciplinary approach with neurologist, psychiatrist and cardiologist and strict diagnostic criteria are necessary.
Keywords: dizziness; vestibular function tests
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