What are the causes of conductive hearing loss?

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Most people have heard of hearing loss, but not much is known about it. In fact, there is not just one type of hearing loss. There are many types of hearing loss depending on the cause and location of the disease. Among them, conductive hearing loss is one of them. Conductive deafness, also known as acoustic deafness, is a hearing impairment caused by lesions in the outer and middle ears.

What are the causes of conductive hearing loss?

Generally occurs in any structure on the sound conduction path of the outer ear and middle ear. Leading to varying degrees of hearing loss, called conductive hearing loss.

1. Ear deformities: including constriction of the external auditory canal, deformity or disappearance of the auricle, deformity or disappearance of the ossicular chain, cauliflower ears, etc.

2. External ear eczema: The external ear or ear canal feels itchy and painful, and the skin of the external auditory canal is red and swollen.
3. Otitis externa: inflammation of the wall of the external auditory canal. If the swelling is not severe, it usually does not cause hearing loss.
4. External auditory canal polyps: Polyps are formed when cartilage grows toward the external auditory canal. Any polyps or abnormal growths of bony tissue should prompt consultation with an ENT.
5. Collapse of the external auditory canal: related to age. The older you are, 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 upward or backward to open the ear canal.
6. Tympanic membrane perforation: may be caused by inflammation, foreign bodies, fractures or blasting sounds, or slaps. Small eardrum perforations can cause a loss of 10 to 15dB but usually heal on their own. Large eardrum perforations require surgical repair.
7. Healing after tympanic membrane perforation: When the tympanic membrane is perforated or the middle ear is repeatedly infected, scars will occur, which limits the mobility of the tympanic membrane and produces mild conductive deafness.
8. Tympanic membrane sclerosis: manifested as white calcified scar, caused by degeneration of tympanic membrane tissue.

9. Tumor or cholesteatoma: a special kind of otitis media, mostly perforation of the flaccid part of the tympanic membrane, and inflammation of the middle ear invades toward the external auditory canal. Persistent discharge of pus andIt smells bad.

10. Foreign bodies: The presence of foreign bodies in the external auditory canal can also affect hearing.

11. Cerumen embolism: Usually cerumen is discharged toward the opening of the external auditory canal, but sometimes cerumen accumulates in the ear canal and forms an emboli, which can partially or completely block the ear canal. Partial blockage of the ear canal does not cause hearing loss, but if the ear canal is completely blocked, it can 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 cause a certain degree of hearing loss.


If the degree of hearing loss is mild and has little impact on normal life, special treatment may not be provided temporarily, but attention must be paid to observation and regular review at the hospital to prevent the condition from developing. Aggravated.

If the condition is serious and affects normal life, symptomatic treatment is required after the cause is identified. For example, if chronic suppurative otitis media causes conductive hearing loss, surgical treatment is generally required to promote hearing recovery.


If it is difficult to treat extremely severe deafness, the method should be selected according to the specific condition. If it seriously affects your life, and the symptoms are not significantly improved after symptomatic treatment, you can choose a hearing aid, and the commonly used hearing aid is a behind-the-ear hearing aid.