05
Jan

Reason For Hearing Loss

Reason For Hearing Loss

Ototoxicity

  • Certain medications can damage the ear, resulting in hearing loss, ringing in the ear, or balance disorders.
  • These drugs are considered ototoxic.
  • Sometimes kids who take high doses of drugs for cancer, infection, or other illnesses develop hearing or balance problems (or both) as a result of taking the drugs.
  • The degree of damage to the ear depends on what type of drug a child is taking, how much, and for how long.
  • And the severity can vary from child to child.
  • Some kids may have no or very minimal hearing loss and “ringing in the ears” (tinnitus), while others may experience major problems with balance and/or profound hearing loss (deafness).
Denoc Hearing Reason For Hearing Loss
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Age

  • Age is the biggest single cause of hearing loss.
  • Hearing loss that develops as a result of getting older is often known as age-related hearing.
  • Most people begin to lose a small amount of their hearing from around 40 years of age.
  • This hearing loss increases as you get older.
  • By the age of 80, most people have significant hearing problems.
  • As your hearing starts to deteriorate, high-frequency sounds, such as female or children’s voices, may become difficult to hear.
  • They are required to wear a hearing aid when they lose a small amount of their hearing.
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Loud noises

  • Another common cause of hearing loss is damage to the ear from repeated exposure to loud noises over time.
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You’re at higher risk of developing noise-induced hearing loss if you:

  • Work in environments where there’s loud music, such as a nightclub
  • Regularly listening to music through headphones

Congenital hearing loss

  • Congenital hearing loss is hearing loss present at birth or soon after.
  • Most of it is inherited, but about 1 in 4 cases are due to things that happen to the baby in the womb.
  • This includes infections such as German measles, being premature, and shortage of oxygen at birth.
  • There are many inherited (genetic) syndromes which cause hearing loss as one of the symptoms.
  • Some inherited hearing loss in children is not present at birth but develops in the early years.
  • The first sign can be poor speech development.
  • In the UK all new babies have a hearing test to make sure the hearing (auditory) nerve is working.
  • Children are checked again at about 8 months of age to make sure they can still hear.
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Conditions affecting the brain

  • Ultimately sound is heard and interpreted by the brain; conditions that affect the hearing centre in the brain can also cause hearing loss.
  • Examples would be multiple sclerosis, brain injury through trauma, stroke and brain infection (encephalitis).
  • In some cases there might be partial or even complete recovery over time, although in other cases the loss would be permanent.

Conditions affecting the hearing (auditory) nerve

  • Cancer can affect the hearing, although this is quite rare.
  • The middle ear and cochlea don’t normally develop tumours, but a tumour called an acoustic neuroma can grow on the auditory nerve.
  • Although this tumour is most often benign (meaning that it does not spread to other parts of the body), it causes loss of hearing.
  • Acoustic neuromas can sometimes be bilateral (meaning there is one tumour on each side).
  • If this happens then both ears will lose hearing.

Serious and permanent hearing injuries can result in a traffic accident when the airbag deploys.

  • The airbag explodes with a sound pressure level that may be greater than 170 decibels.
  • A jet engine at takeoff has a sound pressure level of 140 decibels.
  • A shotgun blast 165 decibels and
  • A rocket launch 180 decibels.
  • A sudden, extremely loud noise such as an airbag exploding can damage immediate and permanent hearing loss (“acoustic trauma”).This causes ear pain, loud ringing and bleeding from the ear canals.
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Foreign bodies in the ear canal

  • A foreign body in the ear is anything that gets stuck in your ear canal other than earwax.
  • Peas or beads are the most common foreign bodies to block the ear and impact on hearing.
  • Foreign bodies are usually trapped in the outer ear canal.
  • Children may put and push things into their ears during play.
  • These things may include food, toy pieces, beads, buttons or disk batteries.
  • Ear foreign bodies may also include insects that fly or crawl into the ear canal.
  • Foreign bodies may also cause itching, pain, fever, redness or bleeding.