To Study the Characteristics of Different Types of Vertigo in Patients Attending the Ear Nose & Throat (ENT) Clinics.

Inclusion Criteria: * Male or female patients 18 years of age and older * Patients with vestibular vertigo of known or unknown origin * Patients who are willing and able to provide written informed consent Exclusion Criteria: * Patients with any condition which, in the opinion of the investigator, makes the patient unsuitable for inclusion based on clinical judgment * Patient with psychiatric disorders, significant neurological disorder or spinal cord damage that would make the evaluation difficult for the investigator * Patients who are not willing to give informed consent * Patients with a known history of hypersensitivity to betahistine * Patients with a history of pheochromocytoma