Comparison between video head impulse and videonystagmography in patients with vertiginous migraine

Background and aim In addition to the classic migraine symptoms of vertigo, dizziness, and imbalance, vestibular migraine causes vertigo, dizziness, and imbalance. The video head impulse test (VHIT) is a novel approach for determining the function of each semicircular canal. Although videonystagmography (VNG) is an effective tool for identifying peripheral vertigo, not all patients with central vertigo can be easily detected. The goal of this research is to confirm the findings of the functional outcome of VHIT versus VNG in patients with vertiginous migraine. Patients and methods We selected 40 patients (both sexes) with vestibular migraine and 25 normal individuals as control. Both groups were subjected to complete clinical examination after thorough history taking, laboratory investigations, VHIT, and VNG. Results VNG had excellent predictive value in the patients’ group (95% confidence interval=0.891–0.998, P=0.0001) with a 96.6% sensitivity and 86.2% specificity, while VHIT had poor predictive value with a sensitivity of 100% and specificity of 48.1% (95% confidence interval=0.523–0.779, P=0.099). Conclusion VNG has a specificity and sensitivity for the prognosis of vestibular migraine that is virtually identical to VHIT.