Deafness is usually the result of inner ear or nerve damage. It may be caused by a congenital defect, injury, disease, certain medication, exposure to loud noise or age-related wear and tear. The chief symptom is an inability to hear sound. For some, hearing may be possible with surgery or a hearing device. Lip-reading skills, written or printed text and sign language may help with communication.

1. HEARING LOSS
Name. Puneet Kumar Jain
Class. DTISL
Date. 29.01.2021

2. Hearing Loss
Hearing Loss also known as hearing
impairment, is a partial or total inability to hear.

3. Types of Hearing Loss
1. Degree of Hearing Loss
2. Age of on set Hearing Loss
3. Organ Disturbance Hearing Loss
4. Nature of Hearing Loss
5. Causes of Hearing Loss

4. 1. Degree of Hearing Loss
a) Normal Hearing Sensitivity
b) Mild Hearing Loss
c) Moderate Hearing Loss
d) Moderately Severe Hearing Loss
e) Severe Hearing Loss
f) Profound Hearing Loss

5. A. Normal Hearing Sensitivity
( -10 to 25 dBHL)
Meaning -: No significant difficult
with faint speech
dBHL- Decibels Hearing Level

6. B. Mild Hearing Loss
( 26 to 40 dBHL)
Meaning -: Difficult with faint speech.

7. C. Moderate Hearing Loss
(41 to 55 dBHL)
Meaning -: Frequent difficult with
normal speech.
dBHL- Decibels Hearing Level

8. D. Moderately Severe Hearing Loss
(56 to 70 dBHL)
Meaning -: Frequent difficult
even with loud speech.
dBHL- Decibels Hearing Level

9. E. Severe Hearing Loss
(71 to 90 dBHL)
Meaning -: Can understand only shouted or
amplified speech.
dBHL- Decibels Hearing Level

10. F. Profound Hearing Loss
( 91 to Above dBHL)
Meaning -: Usually can not
understand even amplified speech.
dBHL- Decibels Hearing Level

11. Audiogram

12. 2. Age of on set hearing loss

13. A. Pre-Lingual Hearing Loss :-
Pre- lingual hearing loss is that which occur before
the child has achieved basic competency in his or her
primary language. It comes by birth (occurring
before age 3 years ).

14. B. Post- Lingual Hearing Loss:-
Post-lingual hearing loss is that which occurs
after the basic acquit ion of language, in
later childhood or adulthood.

15. 3. Organ disturbance hearing loss
Outer ears Middle ears Inner ears

16. Organ Disturbance Hearing Loss
a. Conductive Hearing Loss
b. Sensori-neural Hearing Loss
c. Mixed Hearing Loss
d. Central Deafness

17. a. Conductive Hearing Loss :-
Any dysfunction (problem) of the outer or middle ear in
the pressure of a normal inner ear is termed as a
conductive hearing loss.

18. b. Sensori-neural Hearing Loss :-
When the loss of hearing function is occur due to defect
in inner ear or along the auditory nerve pathway from
inner ear to the brain-stem then the loss is referred as
sensori-neural hearing loss.

19. c. Mixed Hearing Loss :-
In mixed hearing loss, there is a damage or defect in
both outer and middle ear as well as in inner ear. A
patient with conductive ( of sound) and session ( of
sound) both are affected hearing loss that called
Mixed hearing loss.

20. d. Central Deafness :-
If any problem in any central never system or
auditory cotex is called central deafness. Central
Deafness hearing loss is very harmfully.

21. 4. Nature of hearing loss

22. Nature of Hearing Loss :- Two types of nature of
hearing loss are following.
a. Progressive Hearing Loss :- This refers to a slow to
deterioration of hearing sensitivity with time. This may be due to
any infection or hereditary disorder or aging. Conductive or
Mixed or Sensori-neural hearing loss can be progressive in
nature.

23. b. Sudden Hearing Loss :- In this case patient suddenly
loss hearing capacities causes of any accident. Usually the
damage to the auditory system result in a permanent hearing loss.
Sudden hearing loss is usually always of sensori-neural types.

24. 5. Causes of hearing loss

25. Causes of Hearing Loss :- That is three types causes.
a. Prenatal Causes
b. Natal Causes
c. Postnatal Causes

26. Thank
you