What causes deafness? What are the causes of deafness?

For example, otitis media and acoustic neuroma are all important causes of deafness or partial hearing loss. Noise is an important factor that directly causes hearing loss, and it is also an important cause of deafness. Trauma.

In people's daily life, there are some external injuries everywhere, which may be car accidents, direct injuries, violent vibrations, etc., which may cause damage to the tissues and organs in the ear.

Congenital malformations are common, including malformations of the outer ear and middle ear, such as congenital atresia of the external auditory canal or hypoplasia of the eardrum, ossicle, cochlea, vestibular window, etc. Acquired obstruction of the external auditory canal, such as cerumen embolism, bone warts, foreign bodies, tumors, inflammation, etc. Purulent or non-purulent inflammation of the middle ear causes the middle ear to impair, or ear trauma damages the ossicular chain, benign or malignant tumors or otosclerosis of the middle ear.

Deafness is complex and includes both congenital and acquired factors. Mass otitis media is the most important deafness disease in conductive deafness, and in recent years, otitis media has become the leading cause of hearing loss in children. If both, it is mixed hearing loss.

Conductive hearing loss (i.e., conductive hearing loss) is caused by an obstacle in the inner ear in the form of external sound waves. The auditory conduction system includes deafness caused by the external auditory canal and otitis media, deafness caused by other complications of the disease, etc. In addition to conductive deafness, acquired deafness can also be partial**, and sensory and mixed deafness are difficult to use surgical drugs**.

Only with the help of hearing aids will not affect life and work, and need to be treated reasonably.

It is mainly accompanied by tinnitus, and vestibular function may also be impaired. Congenital words can be caused by genetics, dysplasia, and other factors during pregnancy. Acquired, bad lifestyle habits, working under noise for long periods of time, alcohol and drug abuse can affect hearing and lead to hearing loss.

Caused by hypoxia. Acquired factors, trauma, inflammation, tumors and other causes of atresia of the external auditory canal, embolism of the ear canal, cholesteatoma of the external auditory canal and other middle ear diseases such as inflammation, tumors, periosteal perforation, etc.

Tinnitus is the cause of deafness. People who are deaf often have a history of tinnitus. There are many causes of tinnitus.

Improper otitis media can lead to chronic otitis media, which is often one of the conditions for tinnitus to develop. Poor lifestyle: Some people play online games all night, and sleep deprivation can easily strain blood vessels, resulting in insufficient blood supply to the inner ear, which is very harmful to hearing.

It can damage the auditory nerve. Several sounds, how to work for a long time in a noisy environment, often use headphones to listen**, etc.; Certain medical conditions, such as high blood pressure; Lessons caused by external forces: Ear damage caused by instruments, excessive slapping, lightning, etc.

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Many factors, both congenital and acquired, can eventually cause deafness.

Congenital factors, including genetic factors and maternal infection during pregnancy and childbirth, often lead to hearing loss at birth, shortly after birth, and of course, it may be delayed.

Acquired deafness can occur at any age. For example, the risk of hearing loss increases as we age; The environment or noise is too loud and exceeds the normal tolerance threshold; Noise pollution for a long time, etc.

Essential**. The ear is divided into three main areas: the outer ear, the middle ear, and the inner ear. Sound vibrates through the eardrum in the form of sound waves through the ear canal.

The eardrum and three small bones of the middle ear, like dominoes, transmit sound waves in sequence and amplify them step by step until they reach the inner ear and vibrate the lymphatic fluid of the cochlea.

In the cochlea, the nerves are connected into thousands of cilia, which are enough to convert the vibrations of sound into nerve electrical signals, and finally transmit the signals to the brain, and the person hears the sound.

In the whole process, any problem in any link may lead to deafness.

Genetic factors. Genetic defects such as genetic or chromosomal abnormalities can lead to hearing impairment, most often sensorineural hearing loss.

Maternal environmental influences during pregnancy.

It refers to the child's hearing impairment caused by pathological factors such as maternal infection, poisoning or trauma during embryonic development, perinatal or delivery. For example, the mother's improper use of drugs during pregnancy, suffering from certain infectious diseases, improper use of forceps during childbirth, etc.

Infectious factors. Such as meningitis, measles and mumps and otitis media.

Tumor acoustic neuroma Patients may experience deafness due to tumor bleeding and edema of surrounding tissues that compress the cochlear nerve.

Ototoxic drugs.

Certain medications can damage hearing, and there are currently more than 200 drugs and chemicals that have been documented to induce hearing***.

Traumatic head injuries, especially skull fractures, put the ears at serious risk of hearing loss.

Abrupt changes in air pressure.

For example, diving, or when an airplane is taking off and landing, it may cause the inner ear fluid to move, and occasionally leakage or rupture, which can lead to damage to the inner ear nerve.

Predisposing factors. Age factor.

As we age, the cells in the cochlea wear down, and if this relay station for sound signals is damaged, it can lead to hearing loss.

Noise is exposed to noise for a long time, such as occupational noise, conventional sounds in workshops, carpentry, etc.; or short-term noises, such as gunshots, can cause damage to the inside of the ear.

Psychiatric and psychological factors.

Excessive stress, stress, and mood swings can induce deafness.

Some diseases that may affect hearing.

Heart disease, high blood pressure and diabetes, among others, can interfere with the blood flow in the ear**, putting hearing function at risk.

Hope it helps.

There are many causes of deafness, such as working in a noisy environment for a long time, such as some ore mining industries, or some processing workshops.

There was a murmur in the ears, the sound of tinnitus, and slowly became deaf.

What causes deafness? Some people often get on fire and cause deafness. And the special ones.

Sound. The major tremors were noticeable. can cause deafness.

There are also frequent ear picking. Zhang Dalti. Causes inflammation.

If you are in trouble for a long time, you will be deaf.

Long-term work in a mechanical sound-making environment is easy to lead to deafness, because the environment must speak loudly to hear, and over time it will cause tinnitus and deafness.

The causes of deafness are complex, the most important of which is trauma or poor blood circulation, which leads to ischemia of the ear nerve and causes deafness.

There are many causes of deafness. For example, stop listening to noisy high-decibel sounds for a long time. Those who wear headphones for a long time have tinnitus. Or maybe it's a fever or something. Or have had some surgery and have sequelae.

Deafness may be caused by lesions in any one or more of the outer ear, middle ear, cochlea, auditory nerve, auditory cortex.

After the sound wave conduction enters the external auditory canal and vibrates the tympanic membrane, it drives the ossicles in the middle ear, pushes the vestibular window and round window of the cochlea, causes the movement of lymphatic fluid, and excites the hair cells to produce action potential, which is transmitted through the auditory nerve to the auditory center of the cerebral cortex, and finally produces hearing. Lesions in any one or more parts of the conduction pathway will affect the production of hearing, resulting in deafness, mainly due to the following:

1) Diseases of the outer ear. Such as stenosis of the external auditory canal, cerumen embolism, boils and swelling of the external auditory canal, these diseases can cause the volume of the external auditory canal to decrease, hindering the conduction of sound.

2) Middle ear disease. Such as perforation of the eardrum, interruption of the ossicular chain, otitis media, middle ear deformity, etc.

3) Inner ear disease. Such as sudden deafness, Meniere's disease, noise deafness, large vestibular aqueduct syndrome, etc.

4) Postcochlear disease. That is, it refers to the lesions of the auditory pathway behind the cochlea, such as acoustic neuropathy, acoustic neuroma, auditory center processing disorder, etc.