Ear Disease

Question 1

What are the main symptoms of ear disease?

Answer 1

Deafness
Discomfort
Discharge
Dizziness
Din din (tinnitus)
Defective facial movement

Question 2

What are the three main types of deafness?

Answer 2

Conductive
Sensorineural
Mixed

Question 3

What is the cause of conductive deafness?

Answer 3

An obstruction of air in the external/middle ear

Question 4

Sensorineural deafness is the result of pathology involving which structures?

Answer 4

Cochlea (sensory)
CN VIII (neural)

Question 5

Otalgia is commonly the result of referred pain from which nerves?

Answer 5

CNs V, VII, IX and X

Spinal nerves C2/3

Question 6

What are the main causes of ear discharge (otorrhoea)?

Answer 6

Acute otitis media
Chronic otitis media
CSF leakage

Question 7

What is the medical term for glue ear?

Answer 7

Otitis media with effusion

Question 8

How does otitis media with effusion occur?

Answer 8

Blockage of Eustachian tube meaning pressure is not equalised causing fluid from lining to be sucked in

Question 9

What is a cholesteatoma?

Answer 9

Keratinised stratified squamous epithelium in the middle ear

Question 10

Why can a cholesteatoma destroy ossiscles?

Answer 10

As the foreign body formed will secrete osteoclastic enzymes

Question 11

What are the main imaging modalities used for cholesteatoma?

Answer 11

CT

Diffusion weighted MRI (NOT MRI)