Some patients who have chronic suppurative otitis media are prone to repeatedly overflowing mucus or even mucopurulent secretions in the middle ear cavity. These secretions caused by headphones tend to accumulate in the ear canal, forming a continuous irritation to the skin of the ear canal. These factors can cause eczema in the external ear canal, which can lead to itchiness in the ear area, as well as recurrent mucus discharge and crusting in the external ear canal.