Sensorineural deafness is hearing loss caused by cochlear pathology. Its main audiological characteristics and diagnostic criteria are simultaneous reduction of air-conducted and bone-conducted hearing, and an increase in the hearing threshold of more than 25 dB (decibels).
Sensorineural deafness is mainly caused by lesions of the cochlear auditory hair cells, vascular lines, and spiral ganglia, which impede the sound perception function and result in hearing loss. Its audiological characteristics are mainly reflected in the simultaneous decline of air-conducted and bone-conducted hearing, and the increase of hearing threshold >25 dB, which mainly includes sudden deafness, Meniere’s disease, senile deafness, and blast deafness.
Pure Tone Average Hearing Threshold (PTA): The frequency points of 500Hz, 1000Hz and 2000Hz account for 70% of the importance in determining speech intelligibility. The World Health Organization divides the degree of hearing loss into five classes based on the average hearing loss at 500, 1000, 2000 and 4000Hz: 26-40dB for mild, 41-60dB for moderate, 61-80dB for severe, and greater than 81dB for very severe.
When suffering from sensorineural deafness, you can actively seek medical treatment and systematic examination to clarify the diagnosis and the extent of the condition.