What does otitis externa commonly refer to?

Otitis externa is commonly referred to as "swimmer's ear," which is an infection or inflammation of the outer ear canal. This condition typically occurs when water remains trapped in the ear canal, creating a moist environment that fosters bacterial growth. Swimmer's ear can also result from irritants or injury to the ear canal, such as frequent cleaning or inserting objects into the ear.

Understanding this definition is important because it distinguishes otitis externa from other ear-related conditions. For instance, inner ear infections are related to the inner structure of the ear and often involve different symptoms and treatments. Similarly, Meniere's disease pertains to issues with the inner ear that cause vertigo and auditory symptoms but is not classified under otitis externa. Middle ear infections, known as otitis media, involve inflammation of the middle ear space, which is separate from the outer ear and requires different treatment approaches.

This distinction highlights the specific nature of otitis externa and its common association with swimming and water exposure, justifying why the term "swimmer's ear" effectively captures its essence.