Swimmer's Ear
Overview
Swimmer's ear is America's top waterborne illness, leading to some 4.7 million infections and $280M in emergency room costs annually. This painful ear infection, formally called otitis externa, typically occurs when water remains in the ear after swimming or bathing, creating a moisture-rich environment that allows bacteria or fungi to thrive. Unlike middle ear infections, swimmer's ear is an infection that affects the space between the external ear and the middle ear. Swimmer's ear won't get better on its own and requires medication.
Swimming increases the risk of developing otitis externa fivefold. Other factors can also put people at risk of developing swimmer's ear, including wearing earbuds that can trap perspiration in the ear or using Q-tips to dry or clean the ears, which can cause microtears inside the ear (ear damage is why doctors say we shouldn't ever place them inside our ears).
Swimmer's ear is not contagious. It's also different from surfer's ear, a condition in which frequent exposure to icy cold water causes tiny bony growths to develop in the ear canal. Those growths also increase people's risk of developing swimmer's ear because more water can get trapped in the ear.
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