Hearing Impairment
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Hearing loss is usually categorized as either sensorineural hearing loss or conductive hearing loss but hearing problems can also appear as a mixture of
these two main types. All of them are related to how much or to what degree
the ear can process sound.
As the name suggests, conductive hearing loss refers to the ability or non ability of the outer ear to conduct sound via the ear canal to the middle ear. This condition can often be temporary, for example as a result of a build up of wax in the ear or because the ear has become infected and inflamed. With this condition the experience of poorer quality hearing comes about in several ways. It could be related to having fluid in the ear, an allergy, or being ‘blocked up’ with a nasty cold. It could also be because something got stuck in the ear and caused a fracture of some sort or perforated the actual eardrum. Or the problem could arise as the result of a tumor in that area.
In many instances this kind of hearing problem is easily treatable and lsts only a relatively short time. remember, whatever hearing problem you are experiencing, it is always best to get it checked by a doctor or health professional in order to choose the best method of treatment.
If you or someone you know has been diagnosed with sensorineural hearing loss then the condition is a little more serious than the case above. The term ‘neural’ relates to the nerves in the ear that lead to the hearing centre in the
brain and ’sensori’ refers to the way the nerve sensors work, or not, as the case may be.
Damage to the inner ear, as opposed to the outer or middle part, in the sensitive area of the cochlea or damage to the nerves themselves can result in a permanent loss that cannot be reversed. you may not reach the level of total hearing loss, yet nevertheless can experience great difficulty joining in anywhere near like a normal conversation.
This can sometimes happen as a result of injuries received during birth or genetics or may occur as a side effect of certain medications like the regular use of aspirin or some diuretic drugs, for example. Ototoxic hearing loss is the name associated with this condition and its symptoms. Some other causes of hearing loss include the disease, otosclerosis, the development of an acoustic neuroma (tumor on the acoustic nerve) and as a seide effect of viral meningitis. High levels of noise, especially if continued over a period of time can damage the cochlea and its sensitive hair cells and lead, in the end result, to what is termed noise-induced hearing loss.
It may come about simply as a natural part of the aging process too and in this case the degenerative loss of hearing is categorised as presbycusis.Damage to the outer and middle ear, when combined with damage to the inner ear (where the cochlea and auditory nerve are situated) gives rise to the type of ear problem called ‘mixed hearing loss’. If the damage is in one ear only it is called ‘unilateral’.
The degree of hearing loss suffered is usually calculated by testing and matching to a threshold scale of decibels, with mild hearing loss typified at around 25-40 decibels, which is the threshold at which sound starts to be recognised, and profound hearing loss typified at over 90 decibels.
More tips, advice and information about all types of hearing loss, symptoms, causes and treatment is available at www.conductivehearinglossandtreatments.com
Tags: hearing loss, information, mild, mixed, noise induced, profound, sensorineural, test, what causes, what is