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Swimmer's ear (otitis externa)

3 min read

Swimmer's ear is an inflammation or infection of the outer ear canal. It usually gets better quickly with treatment and there are several things you can do to prevent swimmer's ear.

What causes swimmer's ear?

Swimmer's ear, also called otitis externa or tropical ear, is usually caused by a bacterial infection. You are more likely to get swimmer's ear if you regularly get water in your ear, such as when you go swimming. A wet ear canal makes it easier to get infected. Your risk increases if the water is not clean.

Damage or irritation to the ear canal can also increase your risk. Your ear canal can be damaged or irritated from:

  • scratching inside your ears
  • cleaning your ear canal
  • wearing hearing aids.

Swimmer's ear can also develop if you have a fungal infection or an allergic reaction to something in your ears, such as ear plugs, medication or shampoo.

Swimmer's ear symptoms

The symptoms of swimmer's ear can include:

  • ear pain – anywhere from slightly uncomfortable to severe
  • itching
  • a feeling of pressure or fullness in your ear
  • tenderness when you move your ear or jaw
  • trouble hearing.

The ear canal might look red and swollen. You might also have a discharge, which can look clear and watery or can look like pus.

medical illustration of swimmer's ear

In the longer term, your hearing might be affected if you have a build-up of dry skin in your ear canal.

Diagnosis of swimmer's ear

See your doctor if you think you might have swimmer's ear. Your doctor will probably examine your ear canal and tympanic membrane to ensure it is not damaged or torn.

Treatment for swimmer's ear

Your doctor will usually prescribe medicated ear drops. If possible, get someone to apply the ear drops for you - it is easier than trying to do it yourself.

In most cases, treatment will improve symptoms within 1 to 3 days. Most people will have few to no symptoms by the end of the first week of treatment. If your symptoms haven't improved by then, see your doctor.

  • avoid getting your ear canal wet - check with your doctor when you can go swimming or participate in water activities, and wear a shower cap while bathing or showering
  • avoid inserting anything into your ear canal, including cotton buds
  • avoid scratching or touching your ear.

How to prevent swimmer's ear

Ways to prevent swimmer's ear include:

  • drying your ear canal with a hairdryer - keep the hairdryer on low heat and at least 30 cm away from your ear canal
  • using earplugs while swimming
  • avoiding swimming in dirty or polluted water
  • tilting your head after swimming to remove as much water as possible from your ear canals
  • not inserting cotton buds or other objects into your ears
  • not trying to remove earwax since it can protect against infection.

Last reviewed: May 2017

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Swimmer's ear

Swimmer's ear is an infection or inflammation of the canal between the eardrum and the outer ear. This condition can be triggered by exposure to water, or mechanical damage due to overzealous cleaning. The infection can be caused by fungi or bacteria. Another name for swimmer's ear is otitis externa.

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Common ear problems include otitis media, glue ear, ear wax and swimmer's ear.

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