Common causes of hearing loss
conductive deafness
Ear deformity:
Including external auditory canal constriction, auricle deformity or disappearance, ossicular chain deformity or disappearance, vegetable pattern ear and so on.
Cerumen embolism
Usually, cerumen is excluded from the external meatus, but sometimes cerumen accumulates in the meatus, forming emboli, which can partially or completely block the meatus. Partial embolism of the ear canal will not lead to hearing loss, but if the ear canal is completely blocked, it will affect hearing. In addition, when the cerumen plug is very close to the tympanic membrane, even if it is only partially blocked, it will affect the normal activity of the tympanic membrane, and also lead to a certain degree of hearing loss.
Eczema of external ear:
Feel the external ear or ear canal itching and pain, the external ear canal skin swelling.
Otitis externa
Inflammation of the external auditory canal wall. If the swelling is not severe, it usually does not cause hearing loss.
Polyps of external auditory canal:
Polyps are formed by the growth of cartilage toward the external auditory canal. Any polyps or abnormal growth of bone tissue should be consulted by a facial surgeon.
Collapse of external auditory canal:
It's related to age. The older the age is, the more serious the collapse is. Collapse of the external auditory canal can cause partial or complete blockage of the ear canal. Lift the auricle up or behind to open the ear canal.
Perforation of tympanic membrane
It may be caused by inflammation, foreign body, fracture or blasting sound, and slapping. Small perforation of the tympanic membrane can cause a loss of 10 to 15 dB, but it usually heals itself. Large perforation of tympanic membrane should be repaired by operation.
The perforation of tympanic membrane healed
When the tympanic membrane perforation or middle ear repeated infection, there will be scars, thus limiting the activity of the tympanic membrane, resulting in mild conductive deafness.
Tympanosclerosis
White calcification, caused by degeneration of tympanic membrane.
Tumor or cholesteatoma:
A kind of special otitis media, mostly perforation of tympanic membrane relaxation, otitis media invasion to the direction of external auditory canal. Persistent pus and odor.
Foreign body:
The presence of foreign bodies in the external auditory canal can also affect hearing
Causes of sensorineural hearing loss
Due to genetic factors, or the mother during pregnancy by some harmful factors of damage - such as drugs, infection, etc., affect the fetal inner ear development, resulting in congenital hearing loss.
With the growth of age, the organs of the whole body will be aging, and the auditory organs will also be aging and degenerating, causing hearing loss and forming senile hearing loss.
As a result of engaging in a certain occupation, the inner ear injury caused by long-term noise stimulation can form occupational hearing loss.
The hearing loss caused by strong noise such as war, blasting operation and sudden explosion is explosive hearing loss.
Use some ototoxic drugs, such as streptomycin, gentamicin, kanamycin, etc; Or contact with some toxic chemicals, such as phosphorus, mercury, etc., may cause inner ear and auditory nerve poisoning, causing toxic deafness.
Due to meningitis, measles, mumps, syphilis and other infections caused by inner ear and auditory nerve infection poisoning, resulting in infectious deafness.
Sometimes toxic dysentery, toxic pneumonia and so on, due to the virulence of bacteria is too strong, can damage the auditory organs at the same time, can also cause infectious deafness.
The microcirculation disturbance of the inner ear results in insufficient blood supply to the inner ear and hypoxia, which can lead to sudden deafness.
Hearing loss can be caused by trauma caused by accidents, such as fighting, traffic accidents, trauma to the skull, brain tissue, inner ear, inner ear labyrinth concussion, and accidental injury to the inner ear during middle ear surgery.
When suffering from Meniere's disease, inner ear labyrinth hydrops, constant wave and cochlea cause hearing loss.
Neurogenic hearing loss can be caused by tumors of the auditory nerve itself or its adjacent parts.
As a result of mental stimulation, great joy and great sorrow, or other psychological factors, hysterical hearing loss can occur.
Ear deformity:
Including external auditory canal constriction, auricle deformity or disappearance, ossicular chain deformity or disappearance, vegetable pattern ear and so on.
Cerumen embolism
Usually, cerumen is excluded from the external meatus, but sometimes cerumen accumulates in the meatus, forming emboli, which can partially or completely block the meatus. Partial embolism of the ear canal will not lead to hearing loss, but if the ear canal is completely blocked, it will affect hearing. In addition, when the cerumen plug is very close to the tympanic membrane, even if it is only partially blocked, it will affect the normal activity of the tympanic membrane, and also lead to a certain degree of hearing loss.
Eczema of external ear:
Feel the external ear or ear canal itching and pain, the external ear canal skin swelling.
Otitis externa
Inflammation of the external auditory canal wall. If the swelling is not severe, it usually does not cause hearing loss.
Polyps of external auditory canal:
Polyps are formed by the growth of cartilage toward the external auditory canal. Any polyps or abnormal growth of bone tissue should be consulted by a facial surgeon.
Collapse of external auditory canal:
It's related to age. The older the age is, the more serious the collapse is. Collapse of the external auditory canal can cause partial or complete blockage of the ear canal. Lift the auricle up or behind to open the ear canal.
Perforation of tympanic membrane
It may be caused by inflammation, foreign body, fracture or blasting sound, and slapping. Small perforation of the tympanic membrane can cause a loss of 10 to 15 dB, but it usually heals itself. Large perforation of tympanic membrane should be repaired by operation.
The perforation of tympanic membrane healed
When the tympanic membrane perforation or middle ear repeated infection, there will be scars, thus limiting the activity of the tympanic membrane, resulting in mild conductive deafness.
Tympanosclerosis
White calcification, caused by degeneration of tympanic membrane.
Tumor or cholesteatoma:
A kind of special otitis media, mostly perforation of tympanic membrane relaxation, otitis media invasion to the direction of external auditory canal. Persistent pus and odor.
Foreign body:
The presence of foreign bodies in the external auditory canal can also affect hearing
Causes of sensorineural hearing loss
Due to genetic factors, or the mother during pregnancy by some harmful factors of damage - such as drugs, infection, etc., affect the fetal inner ear development, resulting in congenital hearing loss.
With the growth of age, the organs of the whole body will be aging, and the auditory organs will also be aging and degenerating, causing hearing loss and forming senile hearing loss.
As a result of engaging in a certain occupation, the inner ear injury caused by long-term noise stimulation can form occupational hearing loss.
The hearing loss caused by strong noise such as war, blasting operation and sudden explosion is explosive hearing loss.
Use some ototoxic drugs, such as streptomycin, gentamicin, kanamycin, etc; Or contact with some toxic chemicals, such as phosphorus, mercury, etc., may cause inner ear and auditory nerve poisoning, causing toxic deafness.
Due to meningitis, measles, mumps, syphilis and other infections caused by inner ear and auditory nerve infection poisoning, resulting in infectious deafness.
Sometimes toxic dysentery, toxic pneumonia and so on, due to the virulence of bacteria is too strong, can damage the auditory organs at the same time, can also cause infectious deafness.
The microcirculation disturbance of the inner ear results in insufficient blood supply to the inner ear and hypoxia, which can lead to sudden deafness.
Hearing loss can be caused by trauma caused by accidents, such as fighting, traffic accidents, trauma to the skull, brain tissue, inner ear, inner ear labyrinth concussion, and accidental injury to the inner ear during middle ear surgery.
When suffering from Meniere's disease, inner ear labyrinth hydrops, constant wave and cochlea cause hearing loss.
Neurogenic hearing loss can be caused by tumors of the auditory nerve itself or its adjacent parts.
As a result of mental stimulation, great joy and great sorrow, or other psychological factors, hysterical hearing loss can occur.