Swimmer's ear is an infection of the skin lining the ear canal. The cause is prolonged contact with water (any type of water). When water gets trapped in the ear canal the lining becomes damp, swollen,and prone to infection. Ear canals were meant to be dry. Children are more likely to get swimmer's ear from swimming in lake water, compared with swimming pools or the sea. Narrow ear canals also increase the risk of swimmer's ear.
We found a useful handout for at-home management online. Swimmer's Ear (Otitis Externa)
Download Vinegar Water Ear Drop