Neuro-Ophthalmology & Neuro-Otology
Sudden deafness is defined as sensorineural hearing loss of 30 decibels or more in at least 3 contiguous frequencies occurring over less than 3 days. It may be caused by ischemia of the cochlea or eighth nerve, but the underlying etiology is not known in most patients. Tinnitus is associated with worse high-frequency hearing loss, whereas aural fullness and pressure sensations are typically associated with low-frequency hearing loss.
Oct. 21, 2020