Diagnostic Approach to Persistent Vertigo in Young Adults

Initial Diagnostic Considerations

The American Academy of Otolaryngology-Head and Neck Surgery recommends that Benign Paroxysmal Positional Vertigo (BPPV) be considered a common cause of vertigo, but failure to respond to properly performed Dix-Hallpike maneuvers and repositioning procedures suggests either atypical BPPV or an alternative diagnosis 1, 2
Normal CBC and CMP appropriately rule out common metabolic and hematologic causes, but additional testing is warranted given the persistent symptoms, as suggested by the Journal of the American College of Radiology 3

Vestibular function testing should be considered for patients with atypical nystagmus patterns, suspected additional vestibular pathology, failed response to canalith repositioning procedures, or frequent recurrences of BPPV, according to the American Academy of Otolaryngology-Head and Neck Surgery 4
Electronystagmography (ENG) or videonystagmography (VNG) can be used to evaluate vestibular function, as recommended by the American Academy of Otolaryngology-Head and Neck Surgery 4
Audiometry can be used to assess for associated hearing loss that might suggest Menière's disease, as suggested by the Journal of the American College of Radiology 3, 6

Brain MRI without and with contrast should be considered if symptoms persist despite appropriate treatment, or if there are any neurological symptoms, according to the American Academy of Otolaryngology-Head and Neck Surgery and the Journal of the American College of Radiology 3, 7

Vestibular suppressant medications like promethazine should not be used routinely for BPPV treatment but may be considered for short-term management of severe nausea and vomiting, as recommended by the American Academy of Otolaryngology-Head and Neck Surgery 1

Patients should be reassessed within one month after initial treatment to document symptom resolution or persistence, as suggested by the American Academy of Otolaryngology-Head and Neck Surgery 7
If symptoms persist, evaluation for underlying peripheral vestibular or central nervous system disorders is warranted, according to the American Academy of Otolaryngology-Head and Neck Surgery 4
Consider referral to a specialist (otolaryngologist, neurologist, or vestibular therapist) if symptoms persist despite appropriate initial management, as recommended by the American Academy of Otolaryngology-Head and Neck Surgery 7