What is Chronic Otitis Media?

Chronic otitis media is a long-standing infection and inflammation of the middle ear, which is the air-filled space behind the eardrum. Unlike acute ear infections, which resolve quickly, chronic otitis media persists for weeks, months, or even years. It often involves a persistent discharge from the ear and permanent damage to the structures of the middle ear.

Causes and Risk Factors

Chronic otitis media usually begins with an acute middle ear infection that does not completely heal. Recurrent acute infections, eustachian tube dysfunction, and a weakened immune system can all contribute. Other risk factors include exposure to secondhand smoke, allergies, and anatomical abnormalities like cleft palate. In many cases, a perforation in the eardrum fails to close, allowing bacteria to enter the middle ear repeatedly.

Symptoms to Watch For

Common symptoms of chronic otitis media include persistent ear drainage (often with a foul odor), hearing loss, a feeling of fullness or pressure in the ear, and sometimes ear pain. The hearing loss is usually conductive, meaning sound waves are not properly transmitted through the middle ear. Dizziness or balance problems can also occur if the infection affects the inner ear.

Diagnosis

An ear, nose, and throat (ENT) specialist can diagnose chronic otitis media by examining the ear with an otoscope. The doctor will look for a perforated eardrum, signs of infection, and any growths called cholesteatoma. Hearing tests (audiometry) and imaging studies like a CT scan may be ordered to assess the extent of damage to the middle ear bones and surrounding structures.

Treatment Options

Treatment of chronic otitis media focuses on clearing the infection and repairing any damage. Antibiotic ear drops or oral antibiotics are first-line treatments for active infection. If the infection persists or there is structural damage, surgery may be necessary. Common procedures include tympanoplasty (repairing the eardrum), mastoidectomy (removing infected bone), and ossiculoplasty (reconstructing the tiny bones of the middle ear).

Prevention and Outlook

Preventing acute ear infections is the best way to avoid chronic otitis media. This includes practicing good hygiene, avoiding smoke exposure, and managing allergies. Timely treatment of any middle ear infection is crucial. With proper medical and surgical care, most cases of chronic otitis media can be successfully managed, though some hearing loss may be permanent.