Comparison of clinical characteristics and vestibular function test results in patients with vestibular migraine and Menière’s disease

•Spontaneous internal vertigo was experienced by most VM patients.•Most VM patients have high SPV of caloric-induced nystagmus and CT intolerance.•Spontaneous external vertigo was experienced by most MD patients.•MD patients mostly have severe vestibular symptoms and autonomic responses.•Most MD patients show abnormal CT and normal vHIT, with the presence of saccades.