Ep 202 – Labyrinthitis

In this episode, Dr Roger Henderson explores labyrinthitis from a GP’s perspective, moving beyond the textbook definition to focus on practical diagnosis, pathophysiology and management. Although often grouped broadly under causes of acute vertigo, true labyrinthitis is a distinct inflammatory condition of the inner ear that combines vestibular and auditory dysfunction. Its presentation can closely resemble more serious neurological pathology, including posterior circulation stroke, making accurate assessment essential in both primary and acute care settings. This episode examines the underlying causes, key clinical features, important differentials and evidence-based treatment strategies. It aims to refine our diagnostic reasoning, avoid common pitfalls and strengthen confidence when evaluating patients presenting with acute vertigo, hearing loss and associated neuro-otological symptoms in everyday general practice.

Key take-home points

• Labyrinthitis is an inflammatory disorder of the membranous labyrinth that typically presents with vertigo, nausea, vomiting, tinnitus and sensorineural hearing loss.
• It is most commonly caused by viral infections, particularly following an upper respiratory tract illness.
• Bacterial labyrinthitis is less common but more severe and is usually associated with meningitis or acute otitis media. It can lead to permanent hearing loss if not promptly treated.
• The presence of both vestibular symptoms and hearing loss is a key feature that helps distinguish labyrinthitis from vestibular neuritis.
• Labyrinthitis is a diagnosis of exclusion and requires careful assessment to rule out central causes such as stroke.
• Posterior circulation cerebrovascular events can closely mimic labyrinthitis in presentation. Any focal neurological deficits should immediately prompt urgent neuroimaging and specialist evaluation.
• Viral labyrinthitis is typically managed with supportive care, including hydration, rest and symptom control. Current evidence does not strongly support routine use of antivirals or corticosteroids in uncomplicated viral cases.
• Audiometry is essential to confirm and quantify sensorineural hearing loss in suspected cases.
• Benzodiazepines and antihistamines may be used briefly for severe vertigo and nausea. However, prolonged use beyond the acute phase can delay vestibular compensation and recovery.
• Early mobilisation is encouraged once acute symptoms improve to facilitate central vestibular compensation.
• Autoimmune causes of labyrinthitis, though rare, should be considered in atypical or systemic presentations. These cases often require corticosteroids and specialist-led immunomodulatory therapy.
• Imaging, particularly magnetic resonance imaging, is useful when alternative diagnoses, such as acoustic neuroma or central pathology, are suspected.
• The acute vertigo associated with labyrinthitis usually peaks within 48 to 72 hours and gradually improves thereafter.
• Persistent complications can include chronic tinnitus, residual imbalance or permanent sensorineural hearing loss. Severe bilateral involvement, especially after meningitis, may result in bilateral vestibular hypofunction or deafness.
• Vestibular rehabilitation should be offered to patients with ongoing balance symptoms after the acute phase to improve functional recovery.

Key references

1. Wipperman J. Prim Care. 2014;41(1):115-131. doi: 10.1016/j.pop.2013.10.004.
2. NICE. 2023. https://www.nice.org.uk/guidance/ng127/chapter/recommendations-for-adults-aged-over-16.
3. Thompson TL, Amedee R. Ochsner J. 2009;9(1):20-26.
4. Edlow JA, et al. J Emerg Med. 2018;54(4):469-483. doi: 10.1016/j.jemermed.2017.12.024.
5. Bouccara D, et al. Rev Med Interne. 2018;39(11):869-874. doi: 10.1016/j.revmed.2018.02.004.
6. Seemungal BM, Bronstein AM. Pract Neurol. 2008;8(4):211-21. doi: 10.1136/jnnp.2008.154799.
7. Barkwill D, et al. StatPearls [Internet]. 2025. https://www.ncbi.nlm.nih.gov/books/NBK560506/.