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Auditory Neuropathy Accompanying Unilateral Vestibulopathy
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Hye Young Kim, Jae Yun Jung, Chung Ku Rhee, Myung Whan Suh
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Res Vestib Sci. 2009;8(1):60-65.
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 Abstract
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- Auditory neuropathy is a term used to describe abnormal auditory brain stem response (ABR) in the presence of preserved cochlear outer hair cell functions which can be measured by otoacoustic emissions (OAE). We report a case of auditory neuropathy accompanying unilateral vestibular hypofunction and benign paroxysmal positional vertigo. The patient was a 50-year-old man who had experienced hearing loss and tinnitus which started two weeks ago. He had taken several medicines for the last few months due to his lung cancer and tuberculosis. ABR and OAE were checked and the results were compatible with auditory neuropathy. To evaluate his vestibular function, video nystagmography, rotatory chair and oculomotor test were checked. The results were compatible with left unilateral vestibular loss and left lateral canal cupulolithiasis. But the patient experienced nearly no vertigo during his daily life. As presented in this case, most of the auditory neuropathy patients do not complain of vertigo. This is probably due to long term central compensation or maybe due to the decreased nerve conduction of the vertiginous sensation. Vestibular evaluation may be crucial in order to detect masked vestibular dysfunction and to protect these patients from imbalance accidents.
Key Words: Auditory neuropathy; Vestibular Neuronitis; Evoked Potentials, Auditory, Brain Stem; Otoacoustic Emissions
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The Correlation of Benign Paroxysmal Vertigo of Childhood And Migraine
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Jae Yun Jung, Hye Young Kim, Myung Whan Suh, Chung Ku Rhee
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J Korean Bal Soc. 2008;7(1):55-59.
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Abstract
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- Background and Objectives: Many authors have suggested close relationship between benign paroxysmal vertigo of childhood (BPVC) and migraine. But the relationship between the two is not clearly determined. Therefore we investigate clinical features and the course in children with BPVC and the possibility of evolution of migraine in BPVC.
Materials and Methods: We interviewed 30 subjects having enough medical records and fitted to BPVC category who visited otorhinolaryngology for vertigo from 1995 to 2006 year.
Results: The BPVC was the most common diagnosis in our hospital and migraine associated vertigo was followed. The main features of the children with BPVC were in agreement with previous reports. The major differences were later age of onset, having trigger factor and non-spinning type of vertigo. During the follow up, 8 children developed migraine. Females were dominant duration of illness was longer in this group. Almost of them suffered from motion sickness and had more family history of migraine, which was maternal dominant.
Conclusions: The long term close follow-up may be needed in BPVC having possibility of evolution to migraine.
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