Hearing Loss 3


Common Hearing Loss

In North America, 10% of the population has some type of hearing loss.

Some causes of common hearing loss include:

  • Hereditary
  • Trauma
  • Disease
  • Noise exposure
  • The aging process

Conductive Hearing Loss (CHL)

Most conductive losses can be treated medically or surgically and there are times when amplification may be the best choice.

Conductive Hearing Loss (CHL) occurs when the transmission of sound through the outer and/or middle ear is interrupted. Common causes of CHL are:

  • Wax buildup in the ear canal
  • A perforated eardrum
  • Fluid in the middle ear
  • Damaged hearing bones (ossicles)

Sensorineural Hearing Loss (CHL)

Sensorineural losses are usually treated with hearing aids.

Sensorineural Hearing Loss (SHL) occurs in the inner ear affecting the transmission of sound through the cochlea and/or the auditory nerve. Common causes are:

  • Exposure to loud noise
  • Trauma
  • The normal aging process and disease

Mixed Hearing Loss (MHL)

Mixed losses are treated with a combination of medical treatment and hearing aids.

Mixed Hearing Loss (MHL) occurs in the outer and/or middle ear and inner ear. It is a combination of a Conductive and Sensorineural hearing loss.

A mixed hearing loss can occur when a person has

  • Wax blockage in the ear canal
  • Damage to the cochlea.

You should see your doctor if there is active drainage from you ear, you experience sudden hearing loss or rapidly decreasing hearing in one or both ears, you have sudden or ongoing dizziness or pain or discomfort in the ear.