Patient's question:
My child is 23 months old. It was found that the left ear has no hearing, and the right ear only responds at 120 decibels.Doctor's answer:
Hearing impairment can be divided into three types based on the nature of the damage. The first is conductive hearing loss, which is caused by dysfunction of the eardrum or ossicular chain, resulting in significant impairment of air conduction and minimal impact on bone conduction. The second is sensorineural hearing loss, which is caused by damage to the cochlea or spiral organ and the auditory nerve, leading to significant impairment of both air and bone conduction. The third is central hearing loss, which is caused by lesions in various auditory pathways.Among these three types of hearing impairment, conductive hearing loss is the most common. Therefore, it is important to avoid damage to the eardrum and ossicular chain caused by middle ear diseases, external force injuries, and environmental noise. However, the causes of hearing loss are very complex and require a comprehensive examination to determine.