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Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Chicago' for 'CDT/-5.0/DST' instead in /home/cicada/public_html/libraries/joomla/utilities/date.php on line 249

Warning: strftime() [function.strftime]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Chicago' for 'CDT/-5.0/DST' instead in /home/cicada/public_html/libraries/joomla/utilities/date.php on line 250
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Warning: strftime() [function.strftime]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Chicago' for 'CDT/-5.0/DST' instead in /home/cicada/public_html/libraries/joomla/utilities/date.php on line 250
19,
Warning: strftime() [function.strftime]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Chicago' for 'CDT/-5.0/DST' instead in /home/cicada/public_html/libraries/joomla/utilities/date.php on line 250
2012
   
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Is all hearing loss the same?

No.

Hearing loss is categorised into sensorineural and conductive hearing loss.

Conductive hearing loss

Conductive hearing loss is due to blockage or damage in the outer and/or middle ear. This type of hearing loss means sounds become softer and can often be helped by medical or surgical treatment.

Some causes of conductive hearing loss include:

  • hereditary conditions
  • infection of the outer ear
  • impacted wax or foreign objects in the ear canal
  • 'glue ear' which is a middle ear infection and most common in young children
  • the eardrum is perforated

Sensorineural hearing loss

Sensorineural hearing loss (also called nerve deafness or sensorineural deafness) results from a damaged or malfunctioning cochlea (sensory) or hearing nerve (neural) and can be mild, moderate, or severe, including total deafness.

The majority of sensorineural hearing loss is caused by abnormalities in the hair cells of the organ of Corti in the cochlea.

Sensorineural hearing loss leads to a loss of loudness as well as a lack of clarity. The quantity and the quality of sound are affected and sometimes may limit the benefit of a hearing aid.

Causes of acquired sensorineural hearing loss include:

  • ageing
  • exposure to excessive noise
  • Meningitis
  • Meniere's disease
  • Viruses (eg measles and mumps, influenza, rubella, herpes simplex)
  • drugs which can damage the hearing system
  • head injuries
  • vascular diseases (eg leukemia and sickle cell anemia)
  • tumors

Causes of congenital sensorineural hearing impairment include

  • genetically inherited deafness genes
  • cochlear not fully developed
  • abnormalities of the VIII cranial nerve
  • premature birth
  • fetal alcohol syndrome

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Thinking of travelling? Check Faye Yarroll's invaluable tips for traveling with a cochlear implant which can activate the alert when going through metal detectors. For more details go to the CAN website.

 

Disclaimer: CICADA Australia Inc. does not provide medical or financial advice and does not recommend or endorse any specific tests, products, procedures, opinions, or other information found on the Site. Use of the Site is at your own risk.

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