Left untreated, advanced swimmer's ear can cause severe pain along the affected side -- not just the ear, but also around the jaw and down the side of the face and neck. There may be redness and swelling of the entire outer ear, as well as noticeable pus discharge. Advanced swimmer's ear results in complete blockage of the ear canal and swollen lymph nodes. This condition is extremely painful. It may become harder to hear out of the affected ear, and a low- to medium-grade fever may accompany the other symptoms.

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