A child with a history of otitis externa asks about prevention. What is the best recommendation?

A child with a history of otitis externa asks about prevention. What is the best recommendation?

• A. Cleaning ear canals well after swimming
• B. Drying the ear canal with a hair dryer
• C. Swimming only in chlorinated pools
• D. Using cerumenolytic agents daily

Answer: (B)

Moisture in the ear canal after swimming is a leading factor that allows skin maceration and growth of bacteria or fungus, leading to otitis externa. The most effective preventive step is to ensure the ear canal dries thoroughly after water exposure. Using a hair dryer on a low heat setting held at a safe distance helps evaporate residual moisture without causing burns, directly reducing the environment that promotes infection. Why not the others? Simply cleaning the ear canal after swimming can irritate the skin or remove protective cerumen, potentially increasing susceptibility. Daily cerumenolytic use can disrupt the protective wax and dry or injure the canal skin. Relying on chlorinated water alone doesn’t guarantee dryness of the canal, and moisture can persist in non–chlorinated environments too.

Moisture in the ear canal after swimming is a leading factor that allows skin maceration and growth of bacteria or fungus, leading to otitis externa. The most effective preventive step is to ensure the ear canal dries thoroughly after water exposure. Using a hair dryer on a low heat setting held at a safe distance helps evaporate residual moisture without causing burns, directly reducing the environment that promotes infection.

Why not the others? Simply cleaning the ear canal after swimming can irritate the skin or remove protective cerumen, potentially increasing susceptibility. Daily cerumenolytic use can disrupt the protective wax and dry or injure the canal skin. Relying on chlorinated water alone doesn’t guarantee dryness of the canal, and moisture can persist in non–chlorinated environments too.