Autoimmune Inner Ear Disease (AIED, included here as an ear condition)

Autoimmune inner ear disease affects the inner ear, the organ of hearing and balance. The immune system is thought to mistakenly target inner-ear tissue through mechanisms that may include molecular mimicry, where immune cells trained to recognize an infection cross-react with similar-looking proteins in the ear, and a bystander effect in which nearby healthy tissue is damaged during an unrelated immune response. Antibodies against heat shock protein 70 have been studied as a possible marker of cochlear damage, though no biomarker is reliable enough yet for routine diagnosis, so it remains a diagnosis of exclusion.

It is included here as an ear condition and is considered rare, with research describing an estimated incidence of fewer than 5 cases per 100,000 people. It can occur alongside a systemic autoimmune disease, and prompt specialist care matters because hearing can be at stake.

Common signs

Hearing loss in both ears that fluctuates but tends to progress over weeks to months, ringing in the ears, a sense of pressure in the ear, and sometimes dizziness or vertigo.

This is a plain-language summary for orientation, not a diagnosis. Mechanisms are described as current understanding, not settled fact. Work with your own clinician for your care.