vestibular schwannoma, which is a benign tumor that presses against the auditory nerve.presbycusis, which is the gradual hearing loss that develops as a person ages. ![]() The other 50% develops due to environmental factors.Īcquired SNHL can develop as a result of: CongenitalĪ 2022 article notes that 50% of cases occur due to genetic factors. The following table outlines the degrees of hearing loss: According to the American Speech-Language-Hearing Association (ASHA), an audiologist bases this on how loud a sound needs to be for a person to hear it. Research to determine if cochlear damage is repairable in children who develop SNHL early in life has so far shown inconclusive results.ĭepending on how much damage has occurred, SNHL can range from mild hearing loss to profound hearing loss. Congenital: For approximately 1–3 people in every 1,000, the cause is genetic, and they are born with a predisposition toward hearing loss.Sudden: Sudden SNHL has a variety of causes, such as infection, head trauma, or other medical conditions.This is the equivalent to city traffic from inside the car, gas-powered lawnmowers, and leaf blowers. Exposure to sounds above 85 decibels (dB) can start to damage a person’s hearing over time. For example, a person can acquire SNHL over time due to exposure to loud noises. Acquired: There are many causes of acquired SNHL.SNHL can be acquired, sudden, or congenital: there is atypical development of the cochlea or inner ear structures during fetal development.there is trauma to the structures of the inner ear.People may not notice any hearing loss until more than 30–50% of these hairs have become damaged or destroyed. These hairs are in a part of the inner ear called the cochlea. It can develop when tiny hairs - stereocilia - become damaged and die off. SNHL is a type of hearing loss that occurs as a result of inner ear damage. ![]() ![]() Share on Pinterest Westend61/Getty Images
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