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How can moisture trapped in your ear cause swimmer's ear?

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When water gets stuck in your ear canal after swimming -- or after you soak in a hot tub or even take a shower or bath -- it can remove some of the earwax and soften the skin, which makes it easier for germs to get in.

Humid weather and sweat can cause the same problem. Germs like a warm, wet place to grow, so moisture trapped in your ear is perfect for them.

From: What Is Swimmer's Ear? WebMD Medical Reference

SOURCES:

UpToDate: "Outer Ear Infection (The Basics)," "External Otitis (Including Swimmer's Ear) (Beyond the Basics)," "External Otitis: Pathogenesis, Clinical Features, and Diagnosis," "External Otitis: Treatment," "Malignant (Necrotizing) External Otitis."

American Family Physician: "Acute Otitis Externa: An Update."

Mayo Clinic: "Swimmer's Ear."

CDC: "Facts About 'Swimmer's Ear."

Johns Hopkins Medicine: "Swimmer's Ear."

American Academy of Otolaryngology: "Swimmer's Ear."

Cleveland Clinic: "Otitis Externa (Swimmer's Ear)."

Reviewed by Nayana Ambardekar on September 11, 2019

SOURCES:

UpToDate: "Outer Ear Infection (The Basics)," "External Otitis (Including Swimmer's Ear) (Beyond the Basics)," "External Otitis: Pathogenesis, Clinical Features, and Diagnosis," "External Otitis: Treatment," "Malignant (Necrotizing) External Otitis."

American Family Physician: "Acute Otitis Externa: An Update."

Mayo Clinic: "Swimmer's Ear."

CDC: "Facts About 'Swimmer's Ear."

Johns Hopkins Medicine: "Swimmer's Ear."

American Academy of Otolaryngology: "Swimmer's Ear."

Cleveland Clinic: "Otitis Externa (Swimmer's Ear)."

Reviewed by Nayana Ambardekar on September 11, 2019

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