Differential Diagnosis of Sensorineural Hearing Loss

Initial Diagnostic Approach

The American Academy of Otolaryngology-Head and Neck Surgery recommends distinguishing sensorineural hearing loss from conductive hearing loss using tuning fork tests and formal audiometry within 14 days to confirm the diagnosis 1, 2

The American Academy of Otolaryngology-Head and Neck Surgery suggests assessing for features suggesting non-idiopathic causes, including bilateral sudden hearing loss, which may indicate autoimmune, infectious, or toxic etiologies 1, 2
Recurrent episodes of hearing loss may suggest autoimmune inner ear disease, Menière's disease, or migraine-associated hearing loss, according to the American Academy of Otolaryngology-Head and Neck Surgery 1, 2
Focal neurologic findings require urgent evaluation for stroke or central nervous system pathology, as recommended by the American Academy of Otolaryngology-Head and Neck Surgery 1, 2

The American Academy of Otolaryngology-Head and Neck Surgery recommends evaluating all patients with confirmed sensorineural hearing loss for retrocochlear pathology using MRI or auditory brainstem response testing 1, 2, 5
MRI with gadolinium is the gold standard for detecting acoustic neuromas and cerebellopontine angle lesions, according to the American Academy of Otolaryngology-Head and Neck Surgery 1

The American Academy of Otolaryngology-Head and Neck Surgery advises against delaying audiometric confirmation beyond 14 days, as this is essential for accurate diagnosis and treatment decisions 1, 4
Removing impacted cerumen before establishing a diagnosis is recommended, as it can cause conductive hearing loss that confounds the clinical picture 3