Otitis externa

Definition

Otitis externa, also known as swimmer's ear, is an inflammation of the outer ear canal. It often results from bacterial infection and can cause pain, itching, and discharge.

5 Must Know Facts For Your Next Test

1. Otitis externa is commonly caused by bacteria such as Pseudomonas aeruginosa and Staphylococcus aureus.
2. Symptoms include ear pain, itching in the ear canal, redness, swelling, and sometimes fluid drainage.
3. Topical antibiotic ear drops are typically used to treat otitis externa.
4. Preventive measures include keeping ears dry and avoiding inserting objects into the ears.
5. Patients with diabetes or weakened immune systems are at higher risk for more severe infections.

Review Questions

• What are the common symptoms of otitis externa?
• Which bacteria are most commonly responsible for causing otitis externa?
• What are some preventive measures to avoid otitis externa?

Related terms

Otitis media: An inflammation of the middle ear commonly seen in children.

Antibiotic ear drops: Medications used topically in the ear to treat bacterial infections.

Pseudomonas aeruginosa: A type of bacteria frequently responsible for causing infections in humans, including otitis externa.