What is the main cause of otitis externa?

Otitis externa, also called swimmer’s ear, is an inflammation, irritation, or infection of the external ear canal. Swimmer’s ear is caused by fungi or bacteria. Water that remains trapped in the ear canal (when swimming, for example) may provide a source for the growth of bacteria and fungi.

Can otitis media lead to otitis externa?

Sometimes middle ear infections (otitis media) can produce persisting discharge which can become stuck in the ear canal and then cause otitis externa.

What causes otitis externa dogs?

Otitis externa is considered a multifactorial disorder; the most common primary cause is allergy, which is often secondarily accompanied by microbial infections (Malassezia and bacteria). Other predisposing and perpetuating factors also contribute to the disease process (TABLE 1).

How can otitis externa be prevented?


  1. Keep ears as dry as possible.
  2. Turn your head from side to side after getting out of water.
  3. Don’t stick anything into your ear canal.
  4. Don’t swim in polluted water.
  5. Do not swallow the water you swim in.
  6. Use a simple, homemade solution to help prevent bacteria from growing inside the ear.

How is otitis media different from externa?

The main symptom of otitis is pain, whether it is otitis externa or otitis media. If it is otitis externa, the pain may increase when the earlobe is pulled, which is generally not the case for otitis media. In young children, the pain can be expressed in these different signs, the child: frequently pulls on the ear.

Can allergies cause otitis externa?

Most cases of otitis externa are caused by a bacterial infection, although the condition can also be caused by: irritation. fungal infections. allergies.

Can otitis externa cause deafness in dogs?

Otitis and hearing loss Dogs may develop hearing loss due to presence of otitis externa. Hearing loss can be classified as conductive, sensorineural, or mixed (combination of conductive and sensorineural).

Will otitis externa go away by itself?

While otitis externa can clear up by itself, this can take several weeks without treatment. Your GP can usually prescribe medicated ear drops that speed up the healing process.

Are you supposed to put cotton buds in your ears?

It says so right on the back of the box: DO NOT USE IN EARS! Using a cotton swab like a plunger in the ear canal pushes earwax deeper and deeper in. One problem is that if you push the wax deeper inside, there’s no way for the wax to get swept out of the ear.

What is the easiest way to differentiate between otitis media and otitis externa?

Otitis externa is easily diagnosed by looking into the external ear with an otoscope. The main problem with diagnosis is deciding whether or not there is also an otitis media, as often one cannot see the ear drum very well as the external ear canal is swollen, painful and filled with debris.

What bacteria is the most common cause of otitis media?

Acute otitis media is usually a complication of eustachian tube dysfunction that occurs during a viral upper respiratory tract infection. Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis are the most common organisms isolated from middle ear fluid.

What can cause otitis externa in dogs?

Causes of Otitis Externa in Dogs

  • Dogs with long floppy ears or thick hair within the ear may be more prone to this condition.
  • Allergies to some environmental irritants such as mold, dust and some foods.
  • Bacterial or yeast infections.
  • Tumor.
  • Infection through your dog breaking the skin during scratching their ears.