Sudden deafness defined by acute onset sensorineural hearing loss of at least 30 dB on three contiguous frequencies occurring within 72 hours or less. An MRI of the cerebellopontine angle or MRI cerebrum with at least one T2 or FLAIR sequence of the entire brain. Age≥50 years.
| Patients diagnosed with trigeminal neuralgia, hemifacial spasm, vestibular paroxysmia or a cerebellopontine neoplasm. Absence of SSNHL. An MRI of the cerebellopontine angle or MRI cerebrum with at least one T2 or FLAIR sequence of the entire brain. Age≥50 years.
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Exclusion criteria |
Diagnosis of sudden deafness prior to the study period. Significant cerebral damage due to a pre-existing medical condition that will impede an adequate assessment of the degree of CSVD. For instance, a medical history of multiple sclerosis. Presence of an enlarged vestibular aqueduct on MRI that could be responsible for SSNHL. An identifiable cause of iSSNHL such as a Borrelia Burgdorferi infection.
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