The Studies of Hearing Disorder on Diabetics

Abstract

This report is the results of audiometric observations of hearing disorders on diabetics in cooperation of the members of Tokyo diabetic society.
The numbers of cases were amounted to 109 cases selected at discretion.
Consequently, the perseptive deafness including the insensible deafness account for 48 cases of all. And this result is excepted from non-diabetic factor.
It is the characteristic sign that those audiograms are almost symmetric and the recruitment phenomenons are showed positive. The hearing drop on 8000c/s is distinguished.
It is found that, high ton dropping type is increased in short term suffering, degression type or horizontal type is increased in long term suffering. From these facts, it is suggested that perceptive deafness on diabetics is progressive.
On the case with diabetic neuropathy, the perceptive deafness is distinguished in hearing drop.
In addition, many perceptive deafness are found in the cases with diabetic retinopathy. From these facts, it is suggested that fundamental and pathological change of inner ear is concerned with that of retina.
Further more, concerning with therapy of diabetes, the perceptive deafness is found in many cases treated by insulin. And this suggest that hearing drop is concerned with controls of diabetes.