Otitis Externa( Swimmer's Ear ) Otitis externa is an infection involving the ear canal.
Etiology for Otitis Externa
These infections can occur from frequent use of a Q-tip to clean the ear. Ceruminous glands are found in the skin of the ear canal. These glands are responsible for producing an oily substance that functions as protection of the skin from water. When this protective layer is removed either by using Q-tips or swimming, the skin is left exposed to absorb water. Ducts from the glands get blocked, the glands engorge and create swelling of the skin, and ultimately the ear canal closes off.