In an ear infection, narrow tubes that run from the middle ear to high in the back of the throat (eustachian tubes) can become swollen and blocked. This can lead to mucus build-up in the middle ear. This mucus can become infected and cause ear infection symptoms.

Because ear infections often clear up on their own, treatment may begin with managing pain and monitoring the problem. Sometimes, antibiotics are used to clear the infection. Some people are prone to having multiple ear infections. This can cause hearing problems and other serious complications.