Ocular Findings During Vestibular Testing in Vestibular Migraine: Systematic Review
Abstract
Importance Vestibular migraine (VM) is diagnosed using limited consensus-based criteria and presents with symptoms that overlap those of other vestibular disorders. Accurate diagnosis of VM is important to facilitate adequate and timely symptom management as well as to avoid mismanagement. Objective To characterize ocular findings during vestibular testing in adults with VM. Design Systematic review. Setting This systematic review was completed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Database searches of Embase, MEDLINE, and Cochrane Library were conducted. Participants Studies evaluating participants with a diagnosis of definite or probable VM and no concomitant vestibular disorders were included. Intervention or Exposures Positioning tests, positional tests, caloric testing, and video head impulse testing (vHIT). Main Outcome Measures Positioning and positional testing of nystagmus, caloric testing for unilateral weakness, as well as vHIT gain and saccades. Results This review included 31 studies. Positioning testing nystagmus was present in 2% to 100% of patients during Dix-Hallpike (DH) and in 7.9% to 37.5% of patients during the supine head roll testing (SHRT). Nystagmus direction, when present during DH and SHRT, included horizontal, vertical, and torsional nystagmus. Positional testing nystagmus was present in 0% to 100% of patients during upright positional testing and in 42.1% to 95.5% of patients during supine…
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