Hearing loss: what it is, causes, symptoms and solutions

The hearing impairment, commonly known as hearing loss, affects millions of people. It is a partial or complete reduction in the ability to perceive sound. Understanding it is the first step towards addressing it. This guide answers common questions, from causes to available treatments.

Understanding hearing loss: key definitions and differences

Many terms describe hearing difficulties. Here are the key concepts.

What is hearing loss?

A reduction in hearing ability is medically described as hearing loss. Hearing impairment means reduced auditory function compared with normal hearing. It is not one specific disease, but may result from damage or dysfunction in the outer, middle or inner ear, or auditory nerve.

How do deafness and hearing loss differ?

Although often used interchangeably, these terms can describe different degrees of hearing loss.

• Hearing loss: ranges from mild to profound. Residual hearing can often be supported effectively with hearing aids.
• Deafness (anacusis): describes total or very profound loss, with little or no sound perception even with amplification.

What type of disability is hearing loss?

Hearing impairment is classified as a sensory disability. Severity is assessed using hearing thresholds measured in decibels (dB). Depending on national legislation, loss above defined thresholds may qualify for legal recognition and specific support.

What is an auditory attention difficulty?

Hearing loss should not be confused with auditory processing disorder (APD), sometimes described as an auditory attention difficulty. Sounds may be detected normally, but the brain has difficulty interpreting, locating or filtering them—for example, distinguishing speech in noise.Causes and risk factors: why does hearing decline?

Hearing loss has many causes, affecting different parts of the auditory system.

Common causes of hearing loss

Hearing loss may be caused by:

• Ageing (presbycusis): a common cause, involving age-related deterioration of delicate inner ear hair cells.
• Loud noise exposure: intense, prolonged sound at work or from loud music can permanently damage hair cells.
• Infections and disease: ear infections, meningitis, measles or autoimmune conditions.
• Genetic causes: some forms of hearing loss are inherited.
• Trauma: head injury or barotrauma from pressure changes.
• Ototoxic medicines: some antibiotics and chemotherapy medicines can damage hearing.
• Obstruction: earwax or a foreign body can cause temporary conductive hearing loss.

What can damage the auditory nerve?

The auditory nerve, part of the eighth cranial nerve, carries sound signals to the brain. It can be affected by:

• Neuritis (inflammation): often associated with viral causes.
• Acoustic neuroma: a benign tumour that can compress the nerve.
• Head injury: particularly involving the skull base.
• Demyelinating disease: such as multiple sclerosis.

What does the informal term ‘ear stroke’ mean?

This informal expression refers toidiopathic sudden hearing loss: rapid, significant hearing loss, often in one ear, without an obvious cause. It is a medical emergency. Prompt treatment, often involving corticosteroids, can affect recovery.

Symptoms and diagnosis: recognising a hearing problem

Recognising early signs is essential for timely action.

What are the main symptoms?

Common signs of hearing loss include:

• Difficulty following conversations, especially in noise.
• Frequently asking people to repeat themselves.
• Turning television or radio volume unusually high.
• Muffled sounds and voices.
• Difficulty hearing high-pitched sounds, such as women’s or children’s voices and birdsong.
• Tinnitus: ringing or buzzing in the ear.

Do not dismiss these signs. Start by requesting a professional audiometry consultation for a thorough assessment.

How does hearing loss affect what you hear?

It is not simply that everything sounds quieter. Loss often varies across frequencies. Reduced high-frequency hearing can make words blurred and hard to distinguish despite adequate overall volume. ‘I hear but do not understand’ is a common difficulty.

What is single-sided hearing loss?

Loss in one ear creates particular difficulties with sound localisation —knowing where a sound comes from—and understanding in noise. Causes need careful investigation and may include infection, trauma or, less commonly, an acoustic neuroma.

How is hearing loss measured and classified?

An audiology or ENT specialist assesses hearing loss using an audiometric test. It measures hearing thresholds in decibels at different frequencies. One commonly used classification is:

• Mild hearing loss: 20–40 dB, with difficulty hearing soft or distant sounds.
• Moderate hearing loss: 41–70 dB, with difficulty understanding ordinary conversational speech.
• Severe hearing loss: 71–90 dB, with mainly very loud sounds perceived.
• Profound hearing loss: greater than 90 dB.

Treatment and solutions for hearing loss

Although hearing loss cannot always be cured, many solutions can help manage it and improve quality of life.

How is hearing loss treated?

Treatment depends on the cause and type:

• Conductive loss (outer or middle ear): can often be treated through wax removal, treatment of infection or surgery, for example for otosclerosis.
• Sensorineural loss (inner ear or nerve): is common and generally permanent. A principal option is ahearing aid, which amplifies sound to help compensate. In profound cases, assessment may consider acochlear implant.

How is sudden hearing loss treated?

Sudden hearing loss is amedical emergency. Seek emergency care or specialist assessment immediately. A clinician may prescribe corticosteroids; early treatment is important. Do not wait to see whether a hearing aid adjustment resolves it.

Can the auditory nerve be repaired or reactivated?

When the auditory nerve is severely damaged, such as being severed or atrophied, current care cannot simply regenerate or ‘reactivate’ it. Regenerative research continues. Partial recovery may occur with some milder or inflammatory injuries. The usefulness of hearing aids or implants depends on the location and extent of damage and requires specialist assessment.

Can natural methods restore hearing?

No natural remedy or exercise has been proven to regrow human cochlear hair cells or repair the auditory nerve. Avoiding harmful noise helps prevent damage. Be wary of miracle cures; established sensorineural loss generally needs appropriate hearing technology and specialist guidance.

How can a child with hearing loss be supported?

Early diagnosis, including newborn screening, is essential. Multidisciplinary care may include:

• Hearing technology, such as hearing aids or cochlear implants, as early as appropriate.
• Speech and language therapy to support spoken language development.
• Psychological and educational support for the child and family.

Your hearing matters: turn to AudioClinique

Understanding hearing loss is a first step; taking action matters. Whether you notice early symptoms, need professional assessment or are exploring hearing technology, the AudioClinique team is ready to help.

Take care of your hearing wellbeing today, so hearing difficulties need not limit your life.

Explore all our services and book a complete assessment.