types of hearing loss - hearing aids discounted

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Types of Hearing Loss

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Hearing loss is very common problem. There are 3 types of hearing disorder : conductive hearing disorder, sensorineural hearing disorder, and mixed hearing disorder which are presented here by Hearing Aids Discounted. Get details at www.hearingaidsdiscounted.com

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Page 1: Types of hearing loss - Hearing Aids Discounted

Types of Hearing Loss

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Conductive Hearing Loss

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Happens when sound wave can't reach internal ear

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Something stops sound getting into ear

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Affected outer or middle Ear

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Outer Ear - Causes

A. Blocked ear canal– Wax & Infection

B. Scarred eardrum– Often caused by glue ear

C. Perforated eardrum

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Middle Ear - Causes

• Broken Ossicles - Hammer, anvil, stirrup

• Glue ear - Infection with build up of sticky fluid which prevents Ossicles from vibrating properly

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Middle Ear - Causes

Eustachian tube not opening and closing properly

– Cold or catarrh– Allergic reaction

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Sensori-neural Hearing Loss

Affected inner ear auditory nerve80% of people with a hearing loss have SNHL

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Occurs either the hair cells in the cochlea or the nerve to the brain

are damaged

Sound is not been passed onto the auditory centre in the brain

Very rare that the exact cause can be identified

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The Inner Ear

Cochlea

Auditory nerve

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Inner Ear - Causes• Commonest cause – old age

deafness (presbyacusis)

• Noise damage• Chemotherapy / radiotherapy –

sometimes

• Virus or infection

• High doses of some medications

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Inner Ear - Causes

• Acoustic neuroma

• Autoimmune Inner Ear Disease

• Accident – head injury

• Congenital

• Meniere’s Disease

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Central Auditory Processing Disorder (CAPD)

Caused by a difficulty in the hearing part of the Brain

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A sort of hearing dyslexia

Can be helped by lipreading as ability to process words is not affected

Occurs when sound reaches brain but there is a difficulty in identifying

sound patterns

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Central Auditory Processing Disorder (CAPD)

Caused by a difficulty in the hearing part of the Brain

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Presented by

Website : www.hearingaidsdiscounted.comEmail : [email protected] : 781-648-7433  Address : 94 Pleasant Street,

Arlington, Mass. 02476