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September 24, 2016 23:09

Causes of hearing loss

Hearing is one of the basic senses that allow us to adequately know the surrounding reality.But sometimes the feeling is reduced or even completely lost.Causes of hearing loss can be different.Most often this phenomenon is associated with age-related changes in the body.However, this is not always, and young people can be partial or complete loss of hearing.

Hearing loss may well be the result of external and internal exposure.For example, problems often occur after infectious and viral pathologies, which pass on the auditory organs, as well as cardiovascular diseases, ear injuries (including acoustic), after antibiotic therapy.By the way, prolonged intake of such drugs as streptomycin, gentamicin and some others, may be quite adverse effect on hearing.Besides antibiotic drugs can provoke hearing loss of lead or mercury compounds, carbon monoxide, some diuretics and even cigarette smoke, which is in the continuous presence ototoxicity.

Age-related hearing loss - it is a common phenomenon that can be

observed in 35% of patients aged 70 years and almost 50% - over 75 years.

However, age-related changes - is not the only possible cause of hearing loss, such factors known enough:

  • damage to the inner ear or changes in receptor system in the cochlea;
  • lasting impact on hearing sounds with high volume, as well as short-term, but a very strong influence of sound;
  • hereditary deafness, and congenital abnormalities of hearing aids;
  • infectious diseases, which have ototoxic effects;
  • injury affecting the integrity of the tympanic membrane;
  • strong pressure drops (when submerged under water, flying, with a sharp uphill or downhill);
  • taking certain medications, such as antibiotics, and nonsteroidal anti-inflammatory agents;
  • meningitis and other infectious diseases that occur with fever.

hearing loss often associated with professional activities: this is the work in a noisy industry, with machinery and apparatus, exudes loud sounds.

Causes of hearing loss in children

Children sometimes suffer from congenital deafness, which can be transmitted genetically.According to statistics, for every 10 thousand children are 10 of them are born deaf.Geneticists have found a list of genes responsible for the development of deafness.However, this phenomenon more completely unexplored.

In some cases, children are born with defects in the organ of hearing - an anomaly of ear, auditory ossicles, which prevents the normal passage of sound.

As for older children, there is hearing loss is often associated with exposure to loud music and other sound effects.Loud noise is reproduced in the headphones, you will hear in the clubs, at concerts and discos.This load on the auditory organs called excessive sound stimulation.Again, according to statistics, from such stimulation problems are almost 17 million. US residents.

proved that even half a minute the sound effects of the order of 140 decibels causes harmful changes in the auditory hairs involved in the transmission of the sound wave.

Very often, tinnitus and hearing loss occur during prolonged listening to loud music on headphones, especially vacuum.By the way, the French government in the 60's of last century, has approved a law under which the limited intensity of the sound in the player up to 100 decibels.In addition, all audio devices sold in France, always indicate that the loud and prolonged listening is a danger to the auditory organs.Needless to say that the constant noise adversely affects not only the ears, but also on the mental state of a person.

sound reason in the ears and hearing loss

human auditory system has a very strong sensitivity.Therefore, the excessive short sound or a long, but not intensive noise (eg, at work) can cause permanent tinnitus and hearing loss.

In addition, the reasons may be others:

  • viral diseases, or rather, their complications (consequence of angina, influenza, measles, mumps, scarlet fever, etc.);
  • defeat chlamydia;
  • inflammatory processes affecting the auditory organs (eg, otitis media);
  • general intoxication (exposure to lead or mercury products);
  • traumatic brain injury, damage to the eardrum or the auditory nerve (for example, with a deep diving or mechanical action);
  • high blood pressure, vascular disease (a disorder of blood supply to the inner ear organ);
  • medication ototoxic drugs.

If the problem is noticed in time, in most cases, it helps to preserve and restore auditory function.Often the problem is solved in the usual washing moves from the ear cerumen, which is the reason №1 occurrence of tinnitus and hearing deterioration.

Causes of hearing loss in one ear

not always hearing loss develops bilateral type: sometimes only one ear is affected, and this option is more common first.In a lot of cases, the problem is solved by removing sulfur clusters in the ear, or the treatment of the inflammatory process.In some situations the cause is hard enough to find out.

However, among the main factors reducing hearing in one ear isolated:

  • high intensity sharp loud sound near the ear (eg a shot);
  • presbycusis (a disorder associated with age-related changes);
  • impact of the infection (otitis media);
  • damage to the ear, or a strong head injury (eg, fracture of the temporal bone);
  • foreign objects in the ear canal, or the presence of cerumen;
  • otosclerotic change;
  • tumor process next to the auditory nerve.

hearing Lowering very often is not an independent disease, but only symptom arising from any pathology.Changing the perception of visual sound can be temporary or permanent, depending on the cause of hearing loss.It is important to find the reason why today, there are many effective diagnostic methods.