Blockage of the acoustic passage or damage to the inner ear can cause hearing loss. Hearing loss can be conductive, sensorineural, or a combination of both. It can also involve the central auditory nervous system. Hearing loss can be unilateral (one ear) or bilateral (both ears). The degree of hearing loss ranges from slight to profound. In the Philippines, hearing loss is the second most common disability. Causes include genetics, infections, environmental factors, and certain medical conditions. Signs of hearing loss include cupping the hand behind the ear, straining to listen, watching speakers' faces, and difficulty following instructions. The major effect is on language development and related areas of intellectual, social, and educational

2. Blockage of the passage of the acoustic energy.

3. The sensitive mechanism and the auditory nerve maybe
damaged.

4. Combination of both conductive and Sensorineural Hearing
Impairment

5. Dysfunction in central auditory nervous system

6. UNILATERAL BILATERAL
 Present in one ear only.  Present in both ears.

7. What is sound?
Sound is measured by decibels (dB) or units describe its
intensity of its softness and loudness.
Zero (dB) represents the softness and fairness of sound it is
also called zero-hearing threshold (HTL) or audiometric zero.
While the larger (dB) represent louder sounds.

8. Degree of Hearing Lost
Normal
Decibel Loss
0-20 dB
Resulting Impairments
Slight 27-40 dB Faint sounds and distant
conversations are difficult to
hear.
Mild 41-55 dB Limited vocabulary and
speech difficulties may
result
Moderate 56-70 dB Defective speech, language
difficulties and limited
vocabulary may result.
Severe 71-90 dB Defective speech and
language and severe
difficulty in hearing
consonant sound may
result.
Profound 91- and above Speech and language are
likely to deteriorate.

9. In the Philippines 2% of the population
has a hearing impairment, and it was
found that the hearing disabilities is the
2nd highest form of disability next to the
moving disability.

10. 1.Genetics and Hereditary Factor
2. Infections
3. Environmental and other traumatic factors

11. Causes are hereditary and
chromosomal abnormalities.

12. May occur during pregnancy and
after birth.

13. Attributed to environmental factors such as excessive and constant
exposure to very loud noises, Drugs and medication that can turn toxic
when administered to both mother and child at inappropriate times.

15. a passage is abnormally closed or absent.

16. a benign tumor

17. Hole or rapture of oval or round window in the
ear.

18. when the immune system is mistakenly attacked.

19. a toxic in the ear

20. a common congenital viral infection

21. Neonatal infection it can be viral or bacterial

22. genetic order that causes deafness

23. destructive and expanding growth of keratinizing
squamous

24. genetic disorder known as a brachial
arch syndrome

25. genetic conditions that can cause hearing loss

26. genetic disorder caused by a mutation in any
one of 10 genes

27. rare autosomal dominant congenital disorder that
causes deafness and blindness

28. genetic disorder leading to congenital bilateral
hearing lost

29. infectious disease that results hearing lost

30. aberration of sex chromosomes

32. 1. Cups hand behind the ear, cocks ear/tilts head at an angle to catch sounds
2. Has strained or blank facial expression when listening or talked to
3. Pays attention to vibration and vibrating objects
4. Moves closer to speaker, watches face especially the mouth and the lips of
the speaker when talked to
5. Less responsive to noise, voice, music and other sources of sounds
6. Uses more natural gestures, signs and movements to express self
7. Shows marked imitativeness at work and play
8. Often fails to respond to oral questions
9. Often asks for repetition of questions and statements
10. Often unable to follow oral instructions and directions
11. Has difficulty in associating concrete with abstract ideas
12. Has poor general learning performance
13. Invisible handicapping condition because there are only a few physical and
observable manifestation to indicate.

33. The major Effect of deafness is in language
development, concomitant issues occur in
intellectual and social development, speech
and language development that are closely
connected to educational concerns.