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10 Diagnosis Table 6. Barany Diagnostic Criteria for Vestibular Migraine 1. Vestibular migraine a. At least 5 episodes with vestibular symptoms a of moderate or severe intensity b lasting 5 min to 72 hours c b. Current or previous history of migraine with or without aura according to the International Classification of Headache Disorders (ICHD) d c. One or more migraine features with at least 50% of the vestibular episodes: e • Headache with at least two of the following characteristics: one sided location, pulsating quality, moderate or severe pain intensity, aggravation by routine physical activity • Photophobia and phonophobia f • Visual aura g d. Not better accounted for by another vestibular or ICHD diagnosis 2. Probable vestibular migraine a. At least 5 episodes with vestibular symptoms a of moderate or severe intensity b lasting 5 min to 72 hours c b. Only one of the criteria B and C for vestibular migraine is fulfilled (migraine history or migraine features during the episode) Not better accounted for by another vestibular or ICHD diagnosis h a Vestibular symptoms, as defined by the Barany Society's Classification of Vestibular Symptoms and qualifying for a diagnosis of VM, include: • Spontaneous vertigo including : ▶ Internal vertigo, a false sensation of self-motion, and ▶ External vertigo, a false sensation that the visual surrounding is spinning or flowing • Position vertigo, occurring after a change in head position • Visually-induced vertigo, triggered by a complex or large moving visual stimulus • Head motion-induced vertigo, occurring during head motion • Head motion-induced dizziness with nausea. Dizziness is characterized by a sensation of disturbed spatial orientation. Other forms of dizziness are currently not included in the classification of vestibular migraine. b Vestibular symptoms are rated "moderate" when they interfere with but do not prohibit daily activities and "severe" if daily activities cannot be continued. c Duration of episodes is highly variable: About 30% of patients have episodes lasting minutes, 30% have attacks for hours and another 30% have attacks over several days. e remaining 10% have attacks lasting seconds only and tend to occur repeatedly during head motion, visual stimulation, or aer changes of head position. In these patients, episode duration is defined as the total period during which short attacks recur. At the other end of the spectrum, there are patients who may take four weeks to fully recover from an episode. However, the core episode rarely exceeds 72 hours. d Migraine categories 1.1 and 1.2 of the ICDH. e One symptom is sufficient during a single episode. Different symptoms may occur during different episodes. Associated symptoms may occur before, during or aer the vestibular symptoms. f Phonophobia is defined as sound-induced discomfort. It is a transient and bilateral phenomenon that must be differentiated from recruitment, which is oen unilateral and persistent. Recruitment leads to an enhanced perception and oen distortion of loud sounds in an ear with decreased hearing. g Visual auras are characterized by bright scintillating lights or zigzag lines, oen with a scotoma that interferes with reading. Visual auras typically expand over 5–20 minutes and last for less than 60 minutes. ey are oen, but not always, restricted to one hemifield. Other types of migraine aura (e.g., somatosensory or dysphasic aura) are not included as diagnostic criteria because their phenomenology is less specific. and most patients also have visual auras. h History and physical examinations do not suggest another vestibular disorder, or such a disorder is considered but ruled out by appropriate investigations, or such disorder is present as a comorbid or independent condition, but episodes can be clearly differentiated. Migraine attacks may be induced by vestibular stimulation. erefore, the differential diagnosis should include other vestibular disorders complicated by superimposed migraine attacks. * Reprinted from Journal of Vestibular Research, Vol 22, Author(s), Vestibular migraine: diagnostic criteria, 167-172, Copyright 2012, with permission from IOS Press.

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