The condition may occur after water exposure, irritation of the ear canal, or damage to the skin inside the ear from scratching or cleaning with objects such as cotton swabs. Skin conditions such as eczema or dermatitis may also increase the risk of infection.

Common Symptoms

• ear pain or tenderness
• itching inside the ear canal
• redness or swelling of the ear canal
• fluid or discharge from the ear
• a feeling of fullness or pressure in the ear
• temporary reduction in hearing

Symptoms often affect only one ear and may develop gradually as inflammation and swelling increase in the ear canal.

Possible Causes

Otitis externa is most commonly caused by bacterial infection, although fungal infections or irritation of the ear canal can also occur. Moisture, debris in the ear canal, skin irritation, and repeated exposure to water may contribute to the development of the condition.

References

Content adapted from information provided by Ontario Health – Health811:https://health811.ontario.ca/static/guest/medical-library/condition?name=otitis%20externa