Because the nasal cavity and the middle ear cavity are connected through the eustachian tube, when the chronic nasopharynx has long-term inflammatory mucous membrane diffusion and the stimulation of inflammatory secretion, it can lead to inflammation of the eustachian tube, swelling of the eustachian tube mucous membrane and occlusion of the eustachian tube pharyngeal opening; when the inflammatory secretion and inflammation diffuse to the middle ear, it can cause otitis media. The exudation of inflammatory secretion or even purulent secretion in the middle ear cavity may damage the tympanic membrane, which may hinder the transmission of sound into the middle ear; at the same time, due to the rupture of the tympanic membrane and the damage of the ossicular chain, the sound wave cannot be increased through it, resulting in hearing loss. Therefore, some deafness is caused by chronic rhinitis. There is a close relationship between them.
Deafness can be divided into conduction deafness and sensorineural deafness. Sensorineural deafness is caused by the spiral organ of the cochlea. There is pathological change in the auditory nerve or the auditory area of the brain. It can not or can only partially feel the incoming sound. Conductive deafness is caused by the pathological changes of the outer and middle ear, which makes the sound energy decrease when it reaches the inner ear.
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