Hearing loss means that a person cannot hear sounds as well as expected, but the experience can vary considerably. One person may find voices quieter, another may hear sounds but struggle to understand words in a noisy room, and someone else may suddenly notice that one ear is hearing much less than the other.

Hearing loss can be temporary or permanent and may affect one or both ears. Its causes range from relatively straightforward problems such as impacted earwax to damage involving the inner ear or auditory nerve. That is why identifying the type and cause of hearing loss is more useful than simply asking how severe it feels.

The World Health Organization's information on hearing loss explains that hearing loss ranges from mild to profound and can affect people at any age.

Treatment is therefore not one-size-fits-all. Some causes can be treated medically or surgically, whereas other forms of hearing loss are managed with hearing aids, implantable devices, rehabilitation or communication strategies.

When Hearing Loss Needs Urgent Medical Attention

A sudden reduction in hearing should not simply be watched for several days to see whether it improves.

Sudden sensorineural hearing loss can develop all at once or over a short period, frequently in one ear. The U.S. National Institute on Deafness and Other Communication Disorders advises treating sudden unexplained hearing loss as a medical emergency because delayed diagnosis and treatment can reduce treatment effectiveness.

Read the NIDCD guidance on sudden hearing loss if you want more detail about why rapid assessment matters.

Seek prompt medical assessment if hearing disappears suddenly, rapidly deteriorates over days, or occurs with severe dizziness, ear discharge, significant ear pain or other concerning symptoms. New neurological symptoms or significant head or ear trauma also require appropriate urgent medical attention.

Do not assume sudden hearing loss is only wax, congestion or an infection without examination.

What Is Hearing Loss?

Hearing requires several structures to work together.

Sound enters the ear canal and reaches the eardrum. Vibrations are transferred through the small bones of the middle ear to the cochlea in the inner ear. Sensory cells in the cochlea convert those vibrations into electrical signals, which travel through the auditory nerve to the brain.

A problem anywhere along that pathway can reduce hearing.

This is why two people saying “I cannot hear properly” may require completely different treatment.

What Are the Main Types of Hearing Loss?

Three categories are especially useful when explaining hearing problems.

Conductive hearing loss

Conductive hearing loss occurs when sound is not transmitted efficiently through the outer or middle ear.

Possible causes include impacted earwax, fluid behind the eardrum, some ear infections, eardrum perforation or problems affecting the small middle-ear bones. Depending on the cause, conductive hearing loss may sometimes be reversible or substantially improved with treatment.

If reduced hearing is accompanied by pain, discharge or pressure, Nagarik Hospital's existing guide to the causes and treatment of ear pain provides additional information about problems such as ear infection, wax, eardrum injury and pressure-related ear symptoms.

Sensorineural hearing loss

Sensorineural hearing loss involves the inner ear or neural hearing pathway.

Aging and long-term exposure to excessive noise are common causes. Other possibilities include genetic conditions, certain infections, inner-ear disorders and medicines capable of damaging the auditory system.

Sensorineural hearing loss is often permanent, but permanent does not mean nothing can be done. Depending on its severity and the person's needs, rehabilitation may include hearing aids, assistive technology or, for selected people with severe hearing impairment, cochlear implantation.

Mixed hearing loss

Mixed hearing loss means conductive and sensorineural hearing loss occur together.

For example, a person who already has age-related inner-ear hearing loss might also develop a middle-ear disorder.

Treatment may therefore involve addressing the conductive problem while also providing appropriate rehabilitation for the underlying sensorineural hearing loss.

What Are the Common Signs of Hearing Loss?

Hearing loss does not always feel like simply “turning down the volume.”

Common experiences include difficulty following conversations, especially where there is background noise; repeatedly asking people to repeat themselves; feeling that people mumble; turning television, phone or music volume higher than others prefer; difficulty hearing high-pitched sounds; or noticing that one ear performs differently from the other.

Some people also experience tinnitus—a ringing, buzzing or other sound without an external source—alongside hearing loss.

Because gradual hearing loss can develop slowly, family members sometimes notice communication changes before the affected person does.

If these difficulties are becoming persistent or affecting work, family conversations or everyday activities, a formal hearing assessment can help determine what is happening.

What Causes Hearing Loss?

Hearing loss has many possible causes, and age is only one of them.

Earwax blockage

Earwax normally has a protective function, but excessive or impacted wax can obstruct the ear canal and reduce sound transmission.

Wax-related hearing loss may improve after safe removal, but reduced hearing should not automatically be assumed to be wax. An examination helps distinguish blockage from infection, eardrum disease or inner-ear hearing loss.

Avoid inserting pins, cotton buds or other objects deeply into the ear canal.

Ear infection and middle-ear fluid

Inflammation, infection or fluid in the middle ear can interfere with movement of the eardrum and middle-ear structures.

Hearing may improve when the underlying problem resolves, although persistent or recurrent problems require appropriate assessment.

Damage to the eardrum or middle ear

A perforated eardrum, injury, pressure change or disorders affecting the small bones of the middle ear may cause conductive hearing loss.

Treatment varies considerably according to the exact abnormality.

Aging

Age-related hearing loss, known as presbycusis, typically develops gradually.

Damage and changes affecting structures involved in hearing can make speech particularly higher-frequency speech sounds harder to understand. Hearing aids and other hearing-support strategies may help according to the degree and pattern of hearing loss.

Loud-noise exposure

One intense sound or repeated exposure to excessive noise can damage hearing.

Noise-related hearing loss often develops gradually, meaning people may not immediately realise that permanent damage is occurring. NIDCD notes that long or repeated exposure to sufficiently loud sound can damage sensory hair cells in the inner ear.

Workers around machinery, construction, entertainment sound systems or other high-noise environments may need appropriate hearing protection. Personal listening devices can also contribute when sound levels and exposure duration are excessive.

Medicines and medical conditions

Certain medicines can damage the hearing system. Various infections, genetic conditions, neurological conditions and inner-ear disorders can also cause hearing loss.

Do not stop a prescribed medicine because you have read that a drug may affect hearing. Discuss the concern promptly with the clinician who prescribed it so the potential benefits, risks and alternatives can be evaluated safely.

How Is Hearing Loss Diagnosed?

A hearing assessment is more than a single “beep test.”

The appropriate evaluation depends on age, symptoms, medical history and the suspected location of the problem.

The MedlinePlus guide to adult hearing tests describes several commonly used hearing assessments.

Medical and hearing history

A clinician may ask when the hearing difficulty began, whether it appeared suddenly or gradually, whether one or both ears are affected and whether there is tinnitus, pain, discharge, dizziness or pressure.

Previous ear disease, surgery, noise exposure, medicines, family history and other health conditions may also be relevant.

Ear examination

An otoscope allows a clinician to examine the ear canal and eardrum.

This can identify problems such as impacted wax, inflammation, discharge or visible abnormalities of the eardrum.

This step matters because a blockage in the outer ear requires a different approach from inner-ear hearing loss.

Pure-tone audiometry

Pure-tone audiometry measures the quietest sounds a person can detect at different pitches.

During testing, sounds are presented through headphones or earphones and sometimes through a bone-conduction device. The results are recorded on an audiogram.

Comparing air- and bone-conduction results can help clinicians determine whether hearing loss is conductive, sensorineural or mixed.

Speech testing

Hearing is not only about detecting tones.

Speech testing can assess a person's ability to detect and understand spoken words, providing information that may be particularly relevant when someone says, “I can hear people talking, but I cannot understand what they say.”

Tympanometry

Tympanometry evaluates how the eardrum and middle-ear system respond when pressure changes inside the ear canal.

It can help identify certain middle-ear problems, such as abnormal eardrum movement or middle-ear fluid.

Otoacoustic emissions

An otoacoustic emissions, or OAE, test measures responses generated by the inner ear after sound stimulation.

It can provide information about the function of sensory structures within the cochlea.

Other tests

Some people require additional testing depending on their symptoms.

Auditory brainstem response testing, balance assessment, blood tests or imaging such as MRI may be considered in selected situations rather than being routinely required for everyone with hearing loss.

How Is Hearing Loss Treated?

Treatment depends on why hearing has been reduced, not simply on how loud sounds need to be.

Treating a reversible cause

When hearing loss results from a treatable outer- or middle-ear problem, management may involve safe removal of impacted wax, treatment of infection or inflammation, or another procedure appropriate to the diagnosis.

Some eardrum and middle-ear conditions can require surgical treatment.

The correct treatment therefore begins with identifying the cause.

Hearing aids

Hearing aids are electronic devices designed to make sound more accessible to people with hearing loss.

They are particularly important for many people with sensorineural hearing loss. However, a hearing aid does not restore normal biological hearing, and fitting should consider the type and degree of hearing loss as well as communication needs and lifestyle.

The NIDCD guide to hearing aids provides a detailed explanation of how hearing aids work and the different styles available.

Hearing aids should not automatically be treated as the first answer to every hearing complaint. A person with earwax, infection, sudden hearing loss or another medical ear condition may require a different first step.

Cochlear implants

A cochlear implant is different from a conventional hearing aid.

Rather than simply amplifying sound, the device converts sound into electrical signals that stimulate the auditory system. It may be considered for selected people with severe or profound hearing loss when conventional hearing aids do not provide sufficient benefit.

A cochlear implant does not restore normal hearing, and candidacy requires specialist assessment.

More detail is available from the NIDCD cochlear-implant information page.

Sudden sensorineural hearing loss

Sudden sensorineural hearing loss requires a different approach from gradual hearing loss.

NIDCD reports that corticosteroids are commonly used for sudden sensorineural hearing loss, particularly when no underlying cause is identified, and that earlier treatment is generally more effective. Treatment decisions and the route of steroid administration require medical assessment; this is not a condition to self-treat with steroids.

Rehabilitation and communication strategies

Management does not end with a device.

Depending on the individual, communication training, assistive listening technology, captioning and practical changes to the listening environment may make conversations and daily activities easier.

Effective hearing care is therefore better thought of as a rehabilitation plan than as a single product.

Can Hearing Loss Be Prevented?

Not every form of hearing loss can be prevented, but noise-related hearing damage is often avoidable.

The CDC's guidance for preventing noise-induced hearing loss recommends reducing sound levels, increasing distance from excessive noise, taking listening breaks and using appropriate hearing protection when loud environments cannot be avoided.

Practical hearing protection includes keeping personal listening volumes reasonable, limiting prolonged exposure to loud sound and wearing properly fitted hearing protection in noisy workplaces or recreational environments.

Do not wait for obvious hearing difficulty before considering protection. Noise damage may accumulate gradually.

When Should You See an ENT Specialist?

Arrange a medical or hearing evaluation when hearing difficulty persists, progressively worsens, is noticeably different between the ears or begins interfering with communication and everyday life.

Assessment is also appropriate when hearing changes accompany recurring ear infections, blocked-ear sensation, tinnitus, ear discharge, pain or balance symptoms.

The ENT Department at Nagarik Hospital lists reduced hearing, tinnitus, earwax, recurrent ear infections, eardrum problems and dizziness among ear-related concerns assessed by its ENT team.

Remember that gradual hearing difficulty generally allows time for a planned assessment, whereas sudden major hearing loss requires prompt medical attention.

Hearing-Loss Assessment in Bhaktapur and Kathmandu Valley

Nagarik Community Teaching Hospital is located in Gatthaghar, Bhaktapur and serves patients from Bhaktapur, Kathmandu, Lalitpur and surrounding parts of Kathmandu Valley. Its official site confirms an ENT Department and lists a Speech & Hearing Unit within its appointment system.

Because the public website does not currently provide enough detail to verify every hearing test or rehabilitation service available onsite, patients who need a specific test should confirm current availability when making an appointment.

If you have persistent hearing difficulty, tinnitus, recurring ear problems or another hearing concern, you can request a Speech & Hearing Unit appointment or consult the hospital's ENT team for an appropriate initial assessment.

Sudden significant hearing loss should be treated as an urgent medical problem rather than waiting for a routine appointment.

Key Takeaways

Hearing loss is a symptom with many possible causes rather than one disease with one treatment.

Conductive hearing loss involves problems transmitting sound through the outer or middle ear, while sensorineural hearing loss involves the inner ear or auditory pathway. Mixed hearing loss combines both.

An ear examination and appropriate hearing tests help determine the type and degree of hearing loss.

Treatment can range from treating wax or ear disease to hearing aids, selected surgical procedures, cochlear implants and hearing rehabilitation.

Most importantly, sudden unexplained hearing loss deserves prompt medical assessment.

FAQs

Can hearing loss be reversed?

It depends on the cause. Hearing loss caused by a reversible blockage or certain middle-ear problems may improve after treatment. Sensorineural hearing loss caused by permanent inner-ear damage generally cannot simply be reversed, but hearing aids and other forms of rehabilitation can substantially improve access to sound and communication.

Can earwax cause hearing loss?

Yes. Impacted earwax can block sound travelling through the ear canal and cause conductive hearing loss. Because other ear disorders can cause similar symptoms, examination is preferable to assuming wax is the cause.

Is a hearing test painful?

Most routine hearing tests are non-invasive. Pure-tone testing involves listening and responding to sounds. Tympanometry creates temporary changes in ear-canal pressure and may feel unusual or mildly uncomfortable but is not intended to cause injury.

What is the difference between an ENT specialist and an audiologist?

An ENT specialist is a medical doctor who diagnoses and treats diseases affecting the ear, nose, throat and related structures, including conditions that may require medication or surgery. An audiologist specialises in assessment and rehabilitation of hearing and balance disorders. Depending on the problem, patients may need one or both professionals.

Should I buy a hearing aid before having my hearing tested?

A hearing assessment is particularly valuable when hearing loss is significant, asymmetric, sudden or accompanied by pain, discharge, dizziness or other ear symptoms. Those features may point to a medical problem that needs evaluation rather than amplification alone.

Can headphones cause permanent hearing loss?

Excessive sound exposure can contribute to permanent noise-induced hearing loss. Risk is influenced by both sound intensity and exposure duration. Reducing volume, taking listening breaks and limiting prolonged exposure can lower the risk.