Identifiable causes of sudden sensorineural hearing loss
| Infection | 44% |
| Viral infection, for example, mumps, measles, herpes zoster | |
| Bacterial labyrinthitis secondary to chronic middle ear disease | |
| Meningitis | |
| Ear disease | 17% |
| Ménière’s disease | |
| Ear surgery | |
| Ototoxicity, for example, aminoglycosides | |
| Autoimmune disease, for example, autoimmune inner ear disease (AIED) | |
| Otosclerosis | |
| Trauma | 15% |
| Head injury (temporal bone fracture or cerebral trauma) | |
| Sudden loud noise exposure | |
| Barotrauma resulting in round window rupture, for example, from diving or flying | |
| Neurological and vascular disease | 12% |
| Cardiovascular disease | |
| Transient ischaemic attack | |
| Multiple sclerosis | |
| Neoplastic | 8% |
| Vestibular schwannoma | |
| Meningioma | |
| Other | 4% |