Doctor insights on:
Causes Of Deafness In Newborns
Newborn hearing test: A technique using emitted signals from the inner ear hair cells called otoacoustic emissions is used. This does not require the child to react to the sound in any way, but rather relies on a signal from the inner ear brought about by sending a combination of frequencies into the child's ear. It is a good screening test, but like all screening tests has limitations.See 1 more doctor answer
SEVERAL MECHANISMS: These days, loud noises from rock concerts, head phones, loud music in the home. But as we age, our hearing does deteriorate, and we loss high frequencies first. There are also episodes of trauma, Meniere's and other diseases which can eventuate in deafness.
Not a likely cause: There are forms of hearing loss that can have associated thyroid abnormalities, pendred's syndrome is an example, however a goiter is not a cause for hearing loss. A goiter is caused by alterations in the way the thyroid gland is functioning. Changes in the bodies immune system and vitamin d metabolism could effect both the thyroid and hearing, but the thyroid gland is not source of hearing loss.See 1 more doctor answer
Immunologic disorder: Ms is an immunologic disorder most commonly occurring in young adults. It is more common in northern latitudes, less common towards the equator. The immune system attacks the insulating covering of nerves, reducing transmission speed and"short circuiting" the flow of information. Uncommonly it affects the auditory nerve producing hearing loss. I have never seen deafness as a result, it's possible.See 1 more doctor answer
Could an already deaf person (due to nerve problem) still hear tinnitus (due to different cause)?
Yes: First tinnitus is usually a result of some form of hearing loss or dysfunction. So if you have hearing loss then you are at risk for experiencing tinnitus. It is a result of the loss of signals from the ear to the area of the brain responsible for receiving auditory input. These cells then become hyperactive and start picking up false signal/noise (tinnitus) due to loss of this input.
3 major causes: Deafness is a result of irreversible damage to the ear. Most common is damage from loud noises. Excessive noise will kill ear cells. Next is infection of the inner ear. Viruses, especially cmv, and forms of meningitis kill off ear cells. Tumors of the ear nerve (acoustic neuromas) cause progressive deafness. Rare genetic conditions can result in deafness.
No: The origin of tinnitus is in the central auditory pathways of the brain. As such it does not lead to deafness. However, most people with loud tinnitus can notice some hearing loss because the brain producing noise will mask the environmental sound from being perceived. Particularly if the tinnitus is loud.
Nerve damage: Excessive exposure to loud sound damages the nerve endings in the ear that register hearing. The sound waves set off a fluid wave that stimulates cells in the inner ear. If this sound wave is too forceful and repetitive, damage will occur. This will cause permanent hearing loss. The high frequencies are most commonly affected. Other loud noises include guns, machinery, drilling, etc.
Not the headphones: Using the headphones at very high volume might cause noise induced hearing loss, though. Volumes produced by the headphones that produce a ringing in the ears after the noise is over can produce permanent hearing loss, as well as exposures to other sources of noise (lawnmowers, jet engines, loud concerts, etc.) noises are additive, non-occluding headphones while being exposed to noise, for example.
Nerve damage: Extensive damage that can be as a result of trauma, accident, military explosives, minefields, gunshot injuries, or a result of congenital defects or diseases.