hard of hearing
Introduction
Introduction Hearing refers to the loss of hearing, the distortion of listening, and the light proof of deafness. The cause is caused by the outer ear, the middle ear, the inner ear, and the auditory nerve and a certain part of the brain, that is, the auditory system is affected by some abnormal stimulation.
Cause
Cause
It is often caused by the stagnation of the virtual fire and the evil spirits.
Most of them are false certificates. Often due to the deficiency of the essence of the kidney, deafness caused by deafness. More common in patients with old age and weakness. If the ear is suddenly heard, the evidence is mostly. Common causes are turbidity, or wind and evil.
1. The ear is excessively damaged by the tympanic membrane.
2, caused by facial diseases such as otitis media rhinitis.
3, caused by cardiovascular and cerebrovascular diseases such as high blood pressure.
4, the work pressure is too large, such as excessive fatigue and rest.
5, caused by loud noise around work or life.
6, adverse drug reactions.
Examine
an examination
Laboratory examinations must be summarized and analyzed based on objective materials and medical examinations, and several possible diagnostics are proposed, and then further examinations are performed to confirm the diagnosis. Such as examination of hearing: surface sound examination, whispering examination, tuning fork examination, pure tone side listening, impedance sounding, etc., to identify the cause of hearing, to facilitate the degree of damage to the middle ear, inner ear, cochlear lesions.
Diagnosis
Differential diagnosis
The degree of hearing loss is light and heavy, light is heavy, and heavy is sputum. The deafness is divided into 5 levels:
Mild
There is no difficulty in listening to general conversations at close range, and the listening threshold is 26 to 40 dB.
Moderate
It is difficult to listen at a close distance, and the hearing threshold is 41 to 55 dB.
Moderately severe
Listening to loud language at close range is difficult, and the listening threshold is 56 to 70 dB.
Severe
Can be heard by shouting in the ear, listening threshold 71 ~ 91dB.
Full
I can't hear the loud voice shouting in my ear. The pure tone listening and listening threshold is over 91dB.
