Swimmer’s ear, or otitis externa, is an infection of the outer ear canal caused by bacteria. It often results from water remaining in the ear after swimming, which creates a moist environment conducive to bacterial growth.
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Common bacteria causing swimmer's ear include Pseudomonas aeruginosa and Staphylococcus aureus.
Symptoms typically include itching, redness, discomfort, and sometimes discharge from the ear.
Preventative measures include keeping ears dry and using earplugs while swimming.
Treatment usually involves antibiotic eardrops to combat the bacterial infection.
If left untreated, swimmer's ear can lead to more severe infections and complications.
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Related terms
Otitis media: An infection of the middle ear, different from otitis externa which affects the outer ear.