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Background:The aim of this prospective study was to examine the link between Meniere's disease and migrainous vertigo and assess the value of common non-invasive otoneurologic tests in the differential diagnosis. Material and Methods:A total of 38 patients with definite Meniere's disease (MD), 24 with non Meniere's vertigo, dizziness or unsteadiness (control group), and 10 patients with definite Vestibular Migraine (VM) underwent a full otoneurological screening which included an audiometric examination, extratympanic electrocochleography (ET -ECochG), cervical vestibular evoked myogenic potentials (cVEMPs) and videonystagmography with bithermal stimulation.Results: None VM patient presented with abnormal ECochG finding, in contrary to 61% of MD patients, and 4% in the control group. The difference was statistically significant (p<0.001). Pathological cVEMP results and unilateral weakness in caloric stimulation were found in 30% and 10% in VM population, whereas in 52.6% and 55.3% in MD. Again, the difference was statistically significant (p<0.001). Conclusions:The results indicate that certain vestibular test -as ECochG -could often help in the differentiation between VM and MD patients, especially in atypical cases. Last but not least, it seems that both diseases have a common electrophysiological background according to the similar cVEMP pathological findings.