Module 9 Part 2 Patho Otitis externa necrotizing malignant

Question 1

Question

Answer 1

Answer

Question 2

What is otitis externa?

Answer 2

Otitis externa is a common inflammation of the outer ear.

Question 3

What are the types of otitis externa in terms of acuteness and infectivity?

Answer 3

Otitis externa can be acute or persistent and infectious or noninfectious.

Question 4

What are the common causes of acute infections in otitis externa?

Answer 4

Bacterial microorganisms, especially Pseudomonas and Staphylococcus aureus, are common culprits. Less commonly, Escherichia coli may be involved.

Question 5

Are fungal infections a common cause of otitis externa?

Answer 5

No, fungal infections are less common in otitis externa cases.

Question 6

What typically leads to an ear infection in otitis externa?

Answer 6

Infections often follow prolonged exposure to moisture, such as what swimmers experience (swimmer’s ear).

Question 7

What are the initial symptoms of otitis externa?

Answer 7

Early symptoms include ear inflammation, itching (pruritus), swelling, and clear ear drainage.

Question 8

How can otitis externa progress in terms of drainage?

Answer 8

Clear drainage can progress to pus-filled discharge and blockage of the ear canal.

Question 9

What additional symptoms might someone with otitis externa experience?

Answer 9

Individuals with otitis externa may have tenderness, pain, and earlobe retraction due to ear inflammation.

Question 10

What treatments are effective for otitis externa, especially in later stages?

Answer 10

Early treatment with acidifying solutions and topical antimicrobials is usually effective for later stages of the disease.

Question 11

What is often the cause of chronic infections in otitis externa cases?

Answer 11

Chronic infections are more commonly linked to allergies or skin disorders.