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Types of Hearing Loss

Hearing loss is not the same for everyone. The location of the problem within the hearing system determines whether hearing loss is conductive, sensorineural or mixed. Identifying the type is an important part of choosing appropriate hearing care.

Professional hearing assessment for identifying different types of hearing loss

Understanding Types of Hearing Loss

The type of hearing loss describes where the difficulty occurs within the hearing system. Conductive hearing loss involves the outer or middle ear, while sensorineural hearing loss involves the inner ear or auditory nerve. When both are present together, the condition is described as mixed hearing loss.

Outer & middle ear

Inner ear & auditory nerve

Different hearing patterns

Testing identifies the type

Three Basic Types of Hearing Loss

  • Conductive:  Sound transmission through the outer or middle ear is reduced
  • Sensorineural:  The inner ear or auditory nerve is affected
  • Mixed:  Conductive and sensorineural hearing loss occur together
  • Hearing loss may affect one ear or both ears
  • Severity can range from mild to profound
  • Audiological testing helps determine the hearing-loss pattern
Audiologist examining hearing and discussing hearing loss types

How Hearing Loss Types Can Differ

Location

Different parts of the hearing system may be affected.

Sound Level

Hearing sensitivity may be reduced by different amounts.

Speech Clarity

Some losses can affect clarity as well as loudness.

One or Both Ears

Hearing loss may be unilateral or bilateral.

Degree

Hearing loss can range from mild to profound.

Onset

It may occur suddenly or develop gradually.

Stability

Hearing levels may remain stable or change over time.

Care Options

Management depends on the type, cause and degree.

Types of Hearing Loss Explained

Ear anatomy representing conductive hearing loss

Conductive Hearing Loss

Occurs when sound cannot travel efficiently through the outer ear canal, eardrum or middle-ear structures toward the inner ear.

Hearing assessment representing sensorineural hearing loss

Sensorineural Hearing Loss

Results from dysfunction or damage involving the sensory structures of the cochlea or the auditory nerve.

Professional audiological evaluation representing mixed hearing loss

Mixed Hearing Loss

Occurs when conductive hearing loss and sensorineural hearing loss are both present in the same ear.

Clinical assessment representing central auditory processing

Central Auditory Processing Difficulties

These involve difficulties in how auditory information is processed by the central auditory nervous system and are distinct from the three basic peripheral hearing-loss types.

How the Type of Hearing Loss Is Evaluated

Hearing History

Discuss symptoms, onset and listening difficulties.

Ear Examination

Check the ear canal and visible ear structures.

Air Conduction

Measure hearing through the complete hearing pathway.

Bone Conduction

Helps separate conductive from inner-ear involvement.

Additional Tests

Middle-ear or other tests may be added when required.

Results & Guidance

Findings guide suitable follow-up and hearing care.

Frequently Asked Questions

The three basic types are conductive hearing loss, sensorineural hearing loss and mixed hearing loss.

Conductive hearing loss occurs when sound is not efficiently conducted through the outer ear canal, eardrum or middle ear toward the inner ear.

Sensorineural hearing loss results from dysfunction or damage involving the cochlea, sensory structures of the inner ear or the auditory nerve.

Mixed hearing loss means that conductive hearing loss and sensorineural hearing loss are both present.

Sensorineural hearing loss is commonly permanent. Some conductive hearing losses may improve when the underlying cause can be appropriately treated.

Hearing aids can help many people, particularly with sensorineural or mixed hearing loss, but suitability depends on the cause, hearing-test results and individual needs.

An audiological assessment compares hearing responses using tests such as air-conduction and bone-conduction audiometry. Other tests may also be used depending on the findings.

Central auditory processing disorder is considered distinct from peripheral conductive, sensorineural and mixed hearing loss. It involves difficulties in how auditory information is processed by the central auditory nervous system.

Know Your Type of Hearing Loss

Book a professional hearing assessment to identify your hearing levels, hearing-loss pattern and the next appropriate step for your hearing care.