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Overview
What Is Hearing Loss?
Hearing loss means a reduced ability to hear sounds or understand speech. It can range from mild difficulty hearing soft sounds to profound hearing loss, which makes communication very difficult without support. Hearing loss may affect one ear or both ears and can occur at any age. Reduced hearing is not the same as complete deafness, although profound loss may result in little or no usable hearing.
Symptoms
Hearing Loss Symptoms
- Difficulty understanding speech, especially in background noise
- Frequently asking other people to repeat themselves
- Turning up the volume on the television, radio, or phone
- Ringing or buzzing in the ears (tinnitus)
- Muffled hearing
- Reduced hearing in one ear
- Difficulty following conversations in groups
- Relying on lip-reading or watching a speaker’s face
Important
Sudden hearing changes need prompt care
Sudden hearing loss, particularly sudden hearing loss in one ear, should be assessed promptly by a medical professional. Do not wait to see whether it improves on its own, because early evaluation may affect treatment options.
Causes
What Causes Hearing Loss?
Three main types of hearing loss
| Type | Where the problem occurs | Common causes |
|---|---|---|
| Conductive hearing loss | The outer or middle ear, where sound is blocked from reaching the inner ear | Earwax blockage, middle-ear fluid, ear infections, or problems with the eardrum or small ear bones; some causes are medically treatable |
| Sensorineural hearing loss | The inner ear or hearing nerve, which changes sound signals into messages for the brain | Aging, loud-noise exposure, inherited conditions, illnesses, head injury, or medicines that can damage hearing; it is often permanent |
| Mixed hearing loss | Both the conductive and sensorineural parts of the hearing system | A combination of problems, such as earwax or infection together with age-related or noise-related inner-ear damage |
Hearing loss may be present at birth or inherited, or it may develop later in life. Common contributors include aging, repeated loud-noise exposure, ear infections, earwax blockage, head injury, certain illnesses, and medicines that can damage hearing. The pattern may be one-sided or bilateral, and severity can range from mild impairment to profound hearing loss. “Maximum hearing” is not a medical diagnosis; hearing ability is assessed by testing how softly a person can hear and how well they understand speech.
Risk Factors
Hearing Loss Risk Factors
NON-MODIFIABLE FACTORS
Risk increases with age, a family history of hearing impairment, and congenital or inherited conditions. Some illnesses or injuries may also cause changes that cannot be prevented.
MODIFIABLE FACTORS
Repeated loud-noise exposure, smoking, untreated ear disease, and some ototoxic medicines can increase risk. Use hearing protection, treat ear problems, and review potentially harmful medicines with a clinician rather than stopping a prescribed medicine yourself.
Untreated hearing impairment can make communication harder and may reduce social participation. It can also affect cognitive health, although hearing loss does not directly mean that a person will develop dementia. Hearing damage treatment and communication support may help reduce these effects.
Complications
Hearing Loss Complications
- Strain or frustration during communication
- Social isolation
- Difficulty hearing alarms, sirens, or traffic
- Challenges at school or work
- Falls or other safety concerns
- Distress related to tinnitus
- Possible association with cognitive decline
Diagnosis
How Hearing Loss Is Diagnosed
A clinician will ask when the hearing change began, whether it affects one or both ears, and whether there has been noise exposure, infection, medicine use, injury, or a family history of hearing impairment. The ears are examined for problems such as wax, inflammation, fluid, or eardrum changes. The results help identify the type, severity, and possible cause of the hearing loss.
- Hearing screening
- Pure-tone audiometry
- Speech testing
- Tympanometry
- Examination by an ear, nose, and throat specialist when indicated
Seek prompt care
Sudden hearing loss is time-sensitive
Sudden hearing loss, especially sudden hearing loss in one ear, needs urgent medical assessment. Prompt evaluation may help protect the chance of recovery and identify conditions requiring immediate treatment.
Treatment & Management
Treatment and Management for Hearing Loss
Treatment depends on the type and cause of the hearing problem. It may include removing earwax, treating an infection or inflammation, changing an ototoxic medicine with clinician guidance, or treating another underlying condition. Some conductive problems improve when the cause is treated, while inner-ear damage may require hearing technology and rehabilitation.
| Option | May help when | What it does |
|---|---|---|
| Hearing aids | There is usable hearing that can be amplified | Makes selected sounds louder and may improve speech access |
| Bone-conduction devices | Sound cannot travel normally through the outer or middle ear, or hearing differs between ears | Transmits sound through vibration of the skull to stimulate the inner ear |
| Cochlear implants | Severe or profound sensorineural hearing loss limits benefit from hearing aids | Uses an implanted system to provide electrical stimulation to the hearing nerve |
| Assistive listening devices | Specific listening situations remain difficult | Improves access to speech or alerts through tools such as remote microphones, amplified phones, or visual signals |
| Communication or auditory rehabilitation | A person needs help using hearing technology or developing communication strategies | Supports listening skills, speech understanding, caption use, and communication with family, school, or work |
Prevention & Screening
Preventing and Screening for Hearing Loss
- Reduce exposure to loud sounds when possible
- Use properly fitted hearing protection in noisy settings
- Keep personal audio volume at a moderate level
- Avoid inserting cotton swabs or other objects into the ear
- Manage health conditions that can affect hearing
- Review potentially ototoxic medicines with a clinician
Newborns and children should follow recommended hearing screening schedules so problems can be identified early. Adults should seek screening when they notice hearing changes or have repeated occupational, recreational, or medical risk. Regular hearing checks may be especially useful when family members, teachers, or coworkers notice difficulty hearing.
Outlook and Prognosis
Outlook and Prognosis for Hearing Loss
Earwax blockage, some infections, and other conductive problems may improve when the underlying cause is treated. Age-related or inner-ear damage is often permanent, but hearing aids, implants, assistive devices, and rehabilitation can make it manageable. Whether hearing loss can be reversed depends on its cause, timing, severity, and how quickly it is evaluated.
| Pattern | Typical outlook | What affects the outcome |
|---|---|---|
| Temporary or reversible loss | May improve or resolve after treatment | The cause, such as wax, infection, fluid, or another conductive problem |
| Stable permanent loss | May remain but can often be managed effectively | Severity, one- or two-sided involvement, and access to hearing support |
| Progressive loss | May worsen over time and needs monitoring | Underlying condition, noise exposure, aging, medicines, and follow-up care |
| Sudden loss | Outcome varies and requires urgent assessment | How quickly care begins, the cause, and the response to treatment |
When Should You See a Doctor
When Should You See a Doctor for Hearing Loss?
Get urgent help
Know when hearing changes are urgent
Sudden hearing loss, sudden hearing loss in one ear, hearing loss with severe dizziness or neurological symptoms, or hearing loss after a serious injury requires urgent medical evaluation. Prompt care is particularly important for sudden symptoms because some treatments work best when started quickly.
- Gradually worsening hearing
- Persistent muffled hearing
- Recurrent ear symptoms
- Trouble following conversations
- Concerns raised by family members, teachers, or coworkers
Branches
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Hearing Loss
Ear Nose Throat
Tests & Procedure
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Hearing Loss
Ear Tubes
