A smelly ear discharge might be more than just a common infection

Cultures · Published 10 October 2026 Swipe more like this →

In short: Do not ignore persistent ear drainage or hearing loss. While often mistaken for routine infections, a cholesteatoma is a destructive growth behind the eardrum. If left untreated, this keratin-filled cyst can erode the delicate bones of your middle ear and potentially threaten your brain. Early medical intervention is essential.

A cholesteatoma is a non-cancerous but highly aggressive growth of skin cells that develops within the middle ear or mastoid process. Despite the name, it contains no cholesterol or fat. These growths are characterized by their ability to expand and erode surrounding structures. As the mass increases, it can destroy the ossicles—the three tiny bones responsible for hearing—leading to permanent deafness. Because it can penetrate the thin bone separating the ear from the brain, it poses a severe risk of complications, including meningitis or brain abscesses.

Most cases are acquired, often resulting from chronic ear infections or damage to the eardrum that allows skin cells to accumulate in the middle ear. Theories regarding their formation include the invagination of the eardrum into retraction pockets or the proliferation of basal cells triggered by inflammation. A rarer form, congenital cholesteatoma, arises from developmental remnants deep within the ear and is typically identified in patients with no history of prior ear issues or surgery. Regardless of origin, the growth is persistent and does not resolve on its own.

Diagnosis requires a physical examination by a doctor, often involving the cleaning of debris to fully inspect the eardrum. Imaging, such as a CT scan or MRI, is frequently used to rule out other conditions and assess the extent of the damage. Once diagnosed, the standard treatment is surgical removal under general anaesthetic. The primary challenge for surgeons is to completely excise the growth while preserving or reconstructing the ear's delicate anatomy. Recovery typically takes six to eight weeks, and long-term follow-up is necessary to monitor for recurrence, as any residual tissue can lead to the formation of a new cyst.

Patients should seek medical attention for symptoms like smelly, watery discharge, persistent pain, or gradual hearing loss. While surgery is the definitive treatment, it is not without risks; hearing may not improve and could potentially worsen. Following surgery, patients must keep the ear dry and avoid activities like swimming or blowing their nose to ensure proper healing.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

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