Sensorineural Hearing Loss: Causes, Care and Support

01The condition

What sensorineural hearing loss means

MedlinePlus explains that the inner ear contains tiny hair cells, which are nerve endings that change sounds into electrical signals that nerves carry to the brain. Sensorineural hearing loss is caused by damage to these hair cells or to the nerve fibers in the inner ear, and sometimes to the nerve that carries signals to the brain or to the brain itself.

The UCLH audiology service notes that this type of loss makes quiet sounds harder to hear and also reduces the quality of the sound you do hear, which is why turning up the volume does not always make speech clearer. It is mostly permanent, but can often be treated with hearing aids.

02Types

How it differs from conductive and mixed loss

UCLH explains that the ear has three parts: outer, middle and inner. Conductive hearing loss is usually caused by a problem in the outer or middle ear, such as earwax, fluid behind the eardrum, an infection or a hole in the eardrum, that stops sound from reaching the inner ear. It can be temporary or permanent depending on the cause.

In sensorineural hearing loss, sound reaches the inner ear but the inner ear or nerve does not process it properly. When both types are present at the same time, it is called mixed hearing loss. Hearing tests help tell these apart, which matters because their causes and treatments differ.

03Onset

Congenital, acquired, gradual and sudden changes

MedlinePlus explains that sensorineural hearing loss present at birth (congenital) is most often due to genetic conditions or to infections passed to the baby during pregnancy, such as toxoplasmosis, rubella or herpes. Hearing loss that develops later in childhood or adulthood is called acquired.

Acquired loss can develop gradually over years, as with age-related hearing loss or long-term noise exposure, or appear suddenly. It can affect one or both ears. The pattern of onset and whether one or both ears are affected help guide which tests are needed.

04Causes

Possible causes without assuming one from symptoms

According to MedlinePlus and UCLH, acquired sensorineural hearing loss can result from:

• age-related changes in hearing
• loud noise, either very loud sounds or long-term exposure, including at work
• genetic factors
• infections such as meningitis, mumps, scarlet fever or measles
• injury to the ear or head
• blood vessel or immune system diseases
• Ménière’s disease
• tumors such as acoustic neuroma
• certain medicines that can harm the hearing system

In some cases, the cause is unknown. Symptoms alone cannot identify the cause, and congenital hearing loss is not something parents should blame themselves for.

05Symptoms

Everyday listening and communication difficulties

MedlinePlus and UCLH describe symptoms such as:

• difficulty following conversations, especially with two or more people
• problems hearing in noisy places or with background noise
• finding men’s voices easier to hear than women’s
• difficulty telling high-pitched sounds such as “s” and “th” apart
• other people’s voices sounding mumbled or slurred
• some sounds seeming overly loud

MedlinePlus notes that it may also be associated with ringing or buzzing in the ears (tinnitus) and, especially in Ménière’s disease or acoustic neuroma, with feeling off-balance or dizzy. See tinnitus treatment.

07Tests

What hearing tests can clarify

Hearing tests carried out by an audiologist or ENT team show how much hearing loss there is, which frequencies are affected and whether the loss is sensorineural, conductive or mixed. UCLH explains that the audiologist will go through the results and what they mean for you.

Depending on the findings, the cause may be investigated further, for example when the loss affects only one ear or is accompanied by dizziness. For adults with hearing changes, our ENT practice in Bilbao can examine the ears and assess hearing (consultations are in Spanish). It does not offer implant surgery, and sudden hearing loss should be assessed urgently.

08Support

Hearing aids, implants and other selected supports

MedlinePlus explains that the goal of treatment is to improve hearing and lists options that may help:

• hearing aids
• telephone amplifiers and other assistive listening devices
• safety and alert systems for the home
• sign language, particularly for people with severe hearing loss
• speech reading, such as lip reading and using visual cues

For some people with severe hearing loss, a cochlear implant may be recommended; MedlinePlus notes that it makes sounds seem louder but does not restore normal hearing. People also learn communication strategies and share advice with those around them. The right combination depends on the degree of loss, personal goals and preferences.

09Sources

Where the sources differ

MedlinePlus (April 2026) gives a broader list of causes, including Ménière’s disease and specific infections, and describes treatment options including cochlear implants and sign language. The UCLH audiology page (undated) explains sensorineural loss alongside conductive and mixed loss for patients receiving hearing test results, and stresses that sensorineural loss is mostly permanent but can often be treated with hearing aids.

Neither source describes supplements or home remedies that restore hearing. Both list certain medicines among possible causes; if you take a medicine and notice a change in hearing, discuss it with your doctor rather than stopping it yourself, as decisions depend on the balance of benefits and risks. Protecting your ears from loud noise is a sensible step, though it cannot prevent every cause.

10Summary

In summary

Sensorineural hearing loss results from damage to the inner ear hair cells, the hearing nerve or the brain pathways. It makes quiet sounds harder to hear and speech less clear, especially in noise. It has many causes, including aging, noise, genetics, infections, injury, certain medicines and Ménière’s disease, and it is usually permanent.

Hearing tests distinguish it from conductive and mixed loss. Hearing aids, assistive devices, communication strategies and, for some people, cochlear implants can improve communication, although they do not restore normal hearing. A sudden change needs urgent care. Keeping a record of difficult listening situations, which ear is affected, when changes started and your communication goals can help at each review.