Topic Overview
Swimmer's ear (otitis externa) is an inflammation and infection of
the ear
canal
. It occurs when the protective film that covers the ear canal
(lipid layer) is removed. This causes the ear canal to look red and swollen; it
may be narrower than normal and is tender when the outside of the ear is gently
pulled up and back.
Swimmer's ear may develop when water, sand, dirt, or other debris
gets into the ear canal. Since it often occurs when excess water enters the ear
canal, a common name for this inflammation is "swimmer's ear." If you have had
swimmer's ear in the past, you are more likely to get it again.
A rare but serious infection called malignant external otitis can
develop if bacteria invade the bones inside the ear canal and spread to the
base of the skull. Not many people get this infection—it is mainly seen in
older adults who also have
diabetes, people who have
HIV, and children who have
impaired immune systems—but it can be fatal. Symptoms
include ear pain with sudden facial paralysis, hoarseness, and throat pain.
Antibiotics are used to treat this infection.
Other causes of inflammation or infection of the ear canal
include:
- Allergies.
- Bony overgrowths in the
ear canal called exostoses.
- Bubble baths, soaps, and
shampoos.
- Cleaning the ear canal harshly or with a sharp
object.
- Headphones inserted into the ear.
- Scratching
the ear canal with a cotton swab, bobby pin, fingernail, or other sharp
object.
- Skin problems, such as
eczema,
psoriasis, or
seborrhea.
- Sweating.
Swimmer's ear is more likely if you have a very narrow or hairy ear
canal, live in a warm, humid climate, have impacted earwax, or have had a head
injury that also injured your ear.
Symptoms can include itching, pain, and a feeling of fullness in
the ear. Your ear canal may be swollen. You may have moderate to severe pain,
discharge, or hearing loss. Unlike a middle ear infection (acute otitis media), the pain is worse when you chew,
press on the "tag" in front of the ear, or wiggle your earlobe.
You may be able to prevent swimmer's ear. Symptoms often get better
or go away with home treatment.
Review the Check Your Symptoms section to determine if and when you
need to see a doctor.