Mitochondrial Encephalopathy with Progressive Hearing Impairment; A Case Report.

Shidara, Jin-ichi; Kaga, Kimitaka

doi:10.5631/jibirin.85.873

Cited by 1 publication

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“…In addition, there are only reports from Shinmei et al [7] and Choi et al [8] for eye movement abnormality; thus, our report is the first one describing ENG. Shidara et al [9] explained that there is less vestibular damage compared to hearing impairment because it is resistant to an ischemic condition or is anatomically likely to obtain blood flow from the collateral circulation.…”

Section: Discussionmentioning

confidence: 99%

Repeated Attacks of Dizziness Caused by a Rare Mitochondrial Encephalomyopathy

et al. 2018

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Cases of dizziness caused by multiple sclerosis are commonly reported, but those caused by mitochondrial encephalomyopathy have been rarely reported. Particularly, the description of eye nystagmography (ENG) using caloric and optokinetic nystagmus tests has not been reported to date. We encountered the case of a 40-year-old woman with mitochondrial encephalomyopathy who visited us with the chief complaint of dizziness. At first, we considered multiple sclerosis based on the magnetic resonance imaging (MRI) findings and dizziness. Repeated attacks of dizziness and serum lactic acid levels suggested mitochondrial encephalomyopathy. A muscle biopsy confirmed the diagnosis. ENG findings suggested central vestibular disorder of the cerebellum and brainstem. This case suggests that we should not rule out the differential diagnosis of a very rare mitochondrial encephalomyopathy in patients who experience dizziness with MRI findings indicative of multiple sclerosis.

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Section: Discussionmentioning

confidence: 99%