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Chronic Otitis Externa
- Overview, Causes, & Risk Factors
- Symptoms & Signs
- Diagnosis & Tests
- Prevention & Expectations
- Treatment & Monitoring
- Attribution
Overview, Causes, & Risk Factors
Chronic otitis externa is a persistent inflammation of the ear canal.
What is going on in the body?
Chronic otitis externa occurs when there is persistent trauma to or inflammation of the ear canal. This can occur for different reasons, such as infection. This persistent inflammation can lead to symptoms.
What are the causes and risks of the condition?
Repeated trauma to the ear canal in the form of Q-tips, bobby pins, or other objects can alter the healthy skin replacement pattern of the ear canal. Fungal or bacterial infections on the surface of the ear canal skin can also be a cause. With fungal infections, the skin of the ear canal becomes quite thick, and when peeled off, there is significant redness of the underlying skin. In certain situations mold may form on the skin of the ear canal.
Use of some antibiotic
eardrops that contain
Symptoms & Signs
What are the signs and symptoms of the condition?
One of the most prominent symptoms of chronic outer ear inflammation is itching in the ear canal. Other symptoms include low-grade pain and flaky skin. It is rare to find any infected drainage material, severe tenderness, or hearing loss.
Diagnosis & Tests
How is the condition diagnosed?
This condition is diagnosed by examining the outer ear structures. Often thinning of the ear canal skin, flaky skin, or flaky, dried, yellow material is present. In fungal forms, the skin of the ear canal may be thickened and can easily be removed. The underlying skin is often intensely red.
Prevention & Expectations
What can be done to prevent the condition?
Avoidance of trauma to the ear canal will prevent many cases. Many doctors discourage the use of Q-tips and most other objects to clean the ear canal. Keeping the ear canal dry and free of wax will help prevent some cases. A simple eardrop solution can work well to keep the ear canal dry. Avoidance of neomycin-containing drugs may prevent some cases as well.
What are the long-term effects of the condition?
Most cases do not cause any long-term effects. But where they do, the main long-term effect would be continued thickening of the skin of the ear canal to the point where the ear canal is blocked and hearing loss occurs.
What are the risks to others?
There are no risks to others.
Treatment & Monitoring
What are the treatments for the condition?
Treatment depends on the cause of the inflammation.
What are the side effects of the treatments?
Side effects depend on the medicine used to treat the underlying cause. Care must be used if ointment is applied into the external canal, particularly if a Q-tip is used, to avoid perforation to the eardrum and further trauma to the ear canal.
What happens after treatment for the condition?
Most cases of chronic otitis externa will completely resolve with the right treatment. Some people continue to have a need for regular medical management.
How is the condition monitored?
How closely the condition is monitored depends on the intensity of the symptoms. A doctor should be called if any acute symptoms, such as pain, drainage, or tenderness of the ear canal, are present.
Attribution
Author:Mark Loury, MD
Date Written:
Editor:Crist, Gayle P., MS, BA
Edit Date:09/08/02
Reviewer:Kathleen A. MacNaughton, RN, BSN
Date Reviewed:09/08/02