The disease
Clinical features
The picture is protean and slow-burning — which is exactly why it is missed. The signature is hearing that deteriorates over weeks to months in both ears, often with vertigo riding alongside.
Who gets it
AIED typically presents in adults in the fourth to sixth decades, with a modest female predominance that mirrors other autoimmune disorders.1
Hearing loss — the hallmark
The main feature is hearing loss that gets worse over weeks to months, usually in both ears. It is different from the sudden deafness of other conditions: it creeps, which is why people — and clinicians — often wait too long.
The hallmark is rapidly progressive bilateral sensorineural hearing loss evolving over weeks to months — faster than presbyacusis but slower than idiopathic sudden SNHL. Onset is often asymmetric and may mimic unilateral disease before the second ear declares itself; early thresholds may fluctuate, reflecting active inflammation.2
Disproportionately poor word-recognition scores, fluctuation, and bilateral progression are the features that should pull the diagnosis away from Ménière’s or idiopathic sudden SNHL. Without prompt immunosuppression, the loss tends to become permanent and profound — the reason the diagnosis is time-critical.3
Vestibular symptoms
Vestibular symptoms occur in up to 50% of patients and range from episodic vertigo to chronic disequilibrium, postural instability or motion intolerance. They are easily overshadowed by the hearing loss and misattributed to BPPV or vestibular migraine.2
Tinnitus, fullness, and course
Tinnitus (high-pitched, pulsatile or hissing) and aural fullness are common and may precede the hearing change — contributing to confusion with Ménière’s disease. The course is typically monophasic or relapsing–remitting: some patients stabilise spontaneously or after steroids, while others relapse and need long-term immunosuppression. Reversibility depends squarely on how early therapy starts.4
When to suspect AIED: rapidly progressive bilateral SNHL — particularly in an adult with systemic autoimmune symptoms — plus vestibular complaints, fluctuation, or a history of steroid responsiveness.
Key points
- Hallmark: rapidly progressive bilateral SNHL over weeks to months, often asymmetric and fluctuating.
- Vestibular symptoms in up to 50% — easily mistaken for BPPV or vestibular migraine.
- Tinnitus and aural fullness add to confusion with Ménière’s disease.
- Course is monophasic or relapsing; reversibility depends on early treatment.