Hearing loss and deafness
Encyclopedia Symptoms / / August 12, 2017
Alternative names: deafness;hearing loss, conductive hearing loss.
Conductive hearing loss - hearing loss is due to violations of the middle ear canal functions: the eardrum, bones;complete loss of hearing - deafness, partial - hearing loss, ie, reducing the ability to detect and understand some or all of the frequency or the inability to distinguish between the sounds of low amplitude.Impaired hearing can suffer any person able to perceive sound.Sound waves are distinguished by frequency and amplitude.Conductive hearing loss is caused by a wide range of biological and environmental factors.The causes may be diseases of the inner ear and the auditory nerve, middle ear infection or some infectious diseases - influenza, meningitis, etc .;sometimes - injury or prolonged exposure to vibration and noise.
Conductive hearing loss occurs when the outer or middle ear or something, and do not spend more sound as they should.And because sound can be perceived normally functioning eardrum, ear canal and the e
Symptoms of hearing loss
Symptoms of hearing loss may include the following:
- some sounds seem too loud;
- the patient is difficult to hear conversations when they say two or more people;
- patient observed difficulty hearing in noisy areas;
- the patient is difficult to publish separate high-frequency sounds ( "and", "s", "e", etc.);
- less harm to the cause of hearing male voices than women;
- patient experience any hearing problems, when background noise is present;
- the patient is difficult to hear the murmur or muffled voice;.
- feeling dizzy (more likely to occur due to disease or syndrome, Meniere's - is a non-inflammatory disorder of the inner ear, which causes an increase in the amount of fluid endolymph into the ear cavity fluid puts pressure on the cells responsible for keeping balance and control of the orientation of the body space; Meniere's syndrome is manifested.. attacks rotating dizziness, tinnitus and possible hearing loss between bouts person feels good people with Meniere's syndrome complain of frequent bouts of dizziness, vomiting, noise or ringing in the ears, sweating and general weakness of the skin at the same time -. pale, body temperature. reduced attacks can last several hours Deafness gradually increases, and with it increase of vertigo attacks happen less often Sometimes hearing may be impaired for a day or more during the attack on the side of the affected ear occurs involuntary oscillatory movement of the eyes)...;
- acoustic neuroma (or vestibular schwannoma, acoustic neuroma, acoustic schwannoma -. Benign brain tumors, non-inflammatory disorder of the inner ear, which is manifested attacks of rotary vertigo, hearing loss and tinnitus manifests hearing loss in one ear, the pain half of the face,vertigo, paresis diverter and facial nerves, impaired swallowing, etc. The symptoms associated with damage to certain nerve structures because of their growing tumor compression therapy -. surgical removal or irradiation of the tumor more than 95% of acoustic neuromas occur on one side of the main symptom..disease - hearing loss);
- pressure in the ear (in the fluid behind the eardrum);
- melody or buzzing sound in the ears (tinnitus).
Common causes of hearing loss
Conductive Hearing Loss (PPP), is due to a mechanical problem in the outer or middle ear.The main reasons:
- three tiny bones (ossicles) of the ear can not conduct sound properly;
- the eardrum can not vibrate in response to sound.
Causes of conductive hearing loss can often be treated.These include:
- buildup of wax in the ear canal;
- the damage is very small bones (ossicles), which are located directly behind the eardrum;
- the liquid that remains in the ear after an ear infection;
- foreign object that is stuck in the ear canal;
- hole in the eardrum;
- a scar on the eardrum from repeated infections.
Sensorineural hearing loss (or sensorineural hearing loss - a loss of hearing caused by the defeat of structures vestibulocochlear nerve, the inner ear or central auditory analyzer -. In the auditory cortex and brainstem Sensorineural hearing loss may occur as a result of anomalies VIII cranial auditory, vestibular. -ulitkovogo nerve Sensorineural hearing loss due to damage to the central auditory analyzer - a hearing loss of central origin this type of hearing loss also can be triggered by prolonged exposure to intense noise -. for example, listening to loud music through headphones for a few hours) - occurs when the tiny hair cells -patient ear nerve endings do not work correctly.
Sensorineural hearing loss is usually caused by:
- acoustic neuroma;
- age hearing loss;
- childhood infections - such as meningitis, mumps, scarlet fever, measles;
- Meniere's disease;
- regular exposure to loud sounds (such as during work or leisure);
- the use of certain drugs.
Hearing loss can be present at birth (congenital hearing loss) and be associated with the following:
- birth defects, which cause changes in the structure of the ear;
- genetic conditions (known for more than 400 of them);
- infections that the mother passes to her baby still in the womb of its (eg, toxoplasmosis, rubella or herpes).
Wuhu may be harmed because:
- the pressure difference between the inside and outside of the eardrum - is often from scuba diving;
- skull fractures (this can cause damage to structures or nerves of the ear);
- injuries from explosions, fireworks, fire, rock concerts and headphones, especially portable.
Treatment and diagnosis of hearing loss
patient should see a doctor if he:
- hearing problems prevent habitual life;
- hearing problems persist or become worse;
- worse hearing in one ear than the other;
- appeared sudden, severe hearing loss or ringing in the ears;
- there are other symptoms - such as pain in the ear, along with hearing problems;
- have new headaches, weakness, or numbness anywhere in the body.
doctor will study the history of the patient's illness and hold his examination.
diagnostic tests that can be done include the following:.
- audiometry (or acumetry - hearing test, which is used to check the level and type of hearing loss; measurement of hearing, determining hearing sensitivity to different frequencies of sound waves Research conducts audiologist.Current research is being conducted with the help of audiometer, but sometimes - with the use of tuning forks audiometry method allows us to investigate the bone and air conduction test results - audiogram, an audiologist for a hearing loss usually diagnose various diseases and ear Periodic study reveals the beginning of the hearing loss)..;.
- CT (computed tomography) or MRI (magnetic resonance imaging) of the head, if the suspected tumor or fracture;
- tympanometry (method of objective investigation of the functions of the middle ear ossicles and conduction degrees of mobility of the eardrum -. By creating variations of air pressure in the ear canal research results are not used to assess hearing sensitivity, they should always be considered in conjunction with the audiometric data).
The following steps may help in the long-term hearing loss:
- devices to improve hearing;
- hearing aids;
- learning techniques to help the patient to communicate;
- sign language (for people with severe hearing loss);
- cochlear implants (medical prosthesis to compensate for hearing loss in selected patients with severe or severe sensorineural hearing loss or sensorineural) - only for people with big hearing loss.