That’s the passage leading from the outer ear to the eardrum.
Talk with your healthcare provider about self-care and whether antibiotic treatment is needed.
Prevention
Managing ongoing swimmer’s ear infections can be painful and frustrating.

chameleonseye / Getty Images
This complication is more concerning in older adults or those with diabetes or weakened immune systems.
Treating malignant otitis externa involves high-dose antibiotics given intravenously to fight the severe infection.
Centers for Disease Control and Infection.Preventing swimmer’s ear.
Children’s Health.How to get rid of swimmer’s ear.
Nationwide Childrens Hospital.Otitis externa (swimmer’s ear).
2016 Feb; 95(6).
doi: 10.1097/MD.0000000000002695
Centers for Disease Control and Prevention.Ear infection.
Medline Plus.Swimmer’s ear.
Medline Plus.Neomycin, polymyxin, and hydrocortisone otic.
University of Iowa Hospitals and Clinics.Otitis externa: Get rid of swimmer’s ear.
Penn Medicine.Swimmer’s Ear.
2022;14(8).