Inflammation of the external auditory canal is the extensive inflammation of the skin of the external auditory canal and subcutaneous tissue. It is clinically divided into acute and chronic types. Clinically, acute inflammation of the external auditory canal mainly manifests as pain of the external ear, red and swollen skin, even suppuration;chronic inflammation of the external auditory canal as itch of the external ear and pachylosis.

The incidence of the disease is higher, especially with the most onsets in the wet places of tropical and subtropical areas. In summer, chronic inflammation Of the external auditory canal is susceptible to acute attack. The cause of inflammation of the external auditory canal is local infection of bacteria or virus. However, it is related to some inducing factors such as immersion of water, local skin injury, shortage of ear wax, drug stimulation, or allergic reaction.