Sudden Sensorineural Hearing Loss
— Emergency ENT Care in Delhi
Sudden hearing loss — occurring over hours to days without an obvious cause — is a medical emergency. The window for steroid treatment is narrow. Every hour of delay reduces the chance of recovery.
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High-dose corticosteroids administered within 72 hours of onset give the best chance of hearing recovery. Waiting even a few days significantly worsens the prognosis. Do not wait for it to “get better on its own.”
Get Urgent Consultation NowSudden Hearing Loss — What You Need to Know
Sudden Sensorineural Hearing Loss (SSNHL) is defined as a drop of 30 decibels or more across three consecutive frequencies in the audiogram, occurring over 72 hours or less. It typically affects one ear and may present as an abrupt total hearing loss, or a rapid progressive decline over hours to days.
It affects approximately 5–30 per 100,000 people per year. The cause is often never found (idiopathic) — but viral cochlear damage, vascular compromise to the cochlea, and autoimmune inner ear disease are the most common theories. In a minority of cases, it may be caused by acoustic neuroma, Meniere’s disease, perilymphatic fistula or systemic disease.
The critical point: idiopathic SSNHL is a medical emergency with a narrow treatment window. Most evidence supports systemic corticosteroids as the primary treatment, with intratympanic steroid injections for refractory cases. Time is cochlea.
- Sudden drop in hearing — one ear (occasionally both)
- May wake up with reduced or absent hearing in an ear
- Sensation of fullness or blockage in the ear
- Tinnitus — a new ringing, hissing or roaring in the affected ear
- Dizziness or vertigo accompanying the hearing loss
- No obvious preceding cause — no ear infection, no trauma
- May follow a recent viral illness (flu, COVID-19)
- Wax blockage — wax causes gradual conductive hearing loss, not sudden sensorineural loss
- Ear infection — conductive hearing loss, usually with pain and discharge
- Age-related hearing loss — gradual, bilateral, predictable decline
If you are unsure — come in immediately. An audiogram and clinical examination will clarify within minutes.
The Race Against Time — Recovery Chances by Delay
Best outcome — Seek care immediately
Starting systemic corticosteroids within the first 72 hours offers the highest probability of partial or complete hearing recovery. This is the optimal treatment window.
Reduced but meaningful benefit — Still worth treating
Treatment initiated in the first 2 weeks can still yield meaningful improvement, particularly with intratympanic steroids. Do not wait — even if the window is not ideal.
Limited benefit — Salvage treatment possible
Intratympanic steroid injection may be offered as salvage therapy. Spontaneous partial recovery occurs in approximately 30–65% of cases.
Hearing rehabilitation phase
Beyond 6 weeks, the focus shifts to rehabilitation — hearing aids for residual loss, tinnitus management, and in selected severe bilateral cases, cochlear implant evaluation.
Our Approach to Sudden Hearing Loss
Urgent Audiometry
Pure tone audiogram and tympanometry to confirm SSNHL, characterise severity and distinguish from conductive causes (wax, effusion, perforation).
Systemic Corticosteroids
High-dose oral prednisolone is the first-line treatment — prescribed immediately once SSNHL is confirmed on audiogram. Time to initiation is critical.
Intratympanic Steroid Injection
Transtympanic injection of dexamethasone into the middle ear — delivered as primary treatment or as salvage for patients who fail oral steroids or cannot tolerate systemic steroids.
MRI (Selected Cases)
MRI with gadolinium enhancement is indicated to rule out retrocochlear pathology — particularly acoustic neuroma — in cases of unexplained or progressive SSNHL.
Systemic Workup
Haematological and autoimmune workup in selected cases — including FBC, ESR, ANA, ANCA, syphilis serology, lipids — to identify treatable systemic causes.
Hearing Rehabilitation
For patients with residual hearing loss after treatment — hearing aid evaluation, audiological rehabilitation and counselling on realistic expectations and long-term monitoring.
SSNHL — Frequently Asked Questions
Will my hearing come back?
With prompt treatment, approximately 30–65% of SSNHL patients achieve partial or complete hearing recovery. Prognosis is better when treatment is started early, when the degree of initial loss is milder, when low frequencies (rather than high) are predominantly affected, and when there is no accompanying vertigo. Every patient’s prognosis must be individualised.
Can I wait a few days to see if it improves on its own?
No. Waiting is the single biggest mistake in SSNHL management. Every day of delay narrows the treatment window and reduces the probability of recovery. Even if you feel it might be improving, seek evaluation immediately — an audiogram will objectively determine whether loss is present and guide treatment decisions.
Could it just be wax?
Wax causes conductive hearing loss — usually gradual and associated with ear fullness, not a sudden drop. An ENT examination and audiogram will distinguish wax blockage from SSNHL within minutes. If in doubt, come in for evaluation — do not assume it is wax.
I had COVID recently — is this related?
Yes, post-COVID SSNHL is well-documented. COVID-19 is believed to cause cochlear damage through direct viral injury, vascular compromise or immune-mediated inflammation. Post-COVID SSNHL follows the same emergency treatment protocol as idiopathic SSNHL — prompt evaluation and steroids.
Is steroid treatment safe?
A short course of high-dose oral prednisolone for SSNHL is generally safe for most adults. It is not appropriate for patients with poorly controlled diabetes, active peptic ulcer disease, active infections or certain other conditions. Intratympanic steroid injection avoids systemic steroid exposure entirely and is an effective alternative. Your doctor will assess which approach is appropriate for you.
Don’t Wait — Every Hour Counts
If you or someone you know has sudden hearing loss, contact us immediately. Urgent ENT evaluation and treatment initiation at Rog Nidan ENT Clinic, Janakpuri, New Delhi.
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