What Causes Pain Behind the Ear?

Pain behind the ear often has multiple causes. First, it may stem from acute otitis media. Since the mastoid process is located behind the ear, acute otomastoiditis (infection involving both the middle ear and mastoid) can cause pain in this region.

Second, inflammation of the external auditory canal—such as a furuncle (boil) or acute otitis externa—may also lead to pain behind the ear. If the furuncle or inflammation is localized to the posterior wall of the external auditory canal, referred pain may be perceived behind the ear.

Third, pain behind the ear may result from inflammation of the retroauricular lymph nodes. The area behind the ear is a common site for lymph node aggregation; thus, infections or inflammatory conditions affecting the head or face can cause reactive inflammation of these retroauricular lymph nodes, resulting in localized pain.

It is important to seek timely medical evaluation to rule out these conditions. Additionally, certain pharyngeal or nasal disorders may refer pain to the ear or the area behind it—though such cases are relatively uncommon. The most frequent causes remain the three aforementioned ear-related conditions: (1) otitis media and otomastoiditis; (2) external auditory canal disorders, including otitis externa and furunculosis; and (3) retroauricular lymphadenitis.