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      Vestibular migraine: clinical and epidemiological aspects Translated title: Migrânea vestibular: aspectos clínicos e epidemiológicos

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          Abstract

          Introduction

          Vestibular migraine (VM) is one of the most often common diagnoses in neurotology, but only recently has been recognized as a disease.

          Objective

          To analyze the clinical and epidemiological profile of patients with VM.

          Methods

          This was a retrospective, observational, and descriptive study, with analysis of patients’ records from an outpatient VM clinic.

          Results

          94.1% of patients were females and 5.9% were males. The mean age was 46.1 years; 65.6% of patients had had headache for a longer period than dizziness. A correlation was detected between VM symptoms and the menstrual period. 61.53% of patients had auditory symptoms, with tinnitus the most common, although tonal audiometry was normal in 68.51%. Vectoelectronystagmography was normal in 67.34%, 10.20% had hyporeflexia, and 22.44% had vestibular hyperreflexia. Electrophysiological assessment showed no abnormalities in most patients. Fasting plasma glucose and glycemic curve were normal in most patients, while the insulin curve was abnormal in 75%. 82% of individuals with MV showed abnormalities on the metabolism of carbohydrates.

          Conclusion

          VM affects predominantly middle-aged women, with migraine headache representing the first symptom, several years before vertigo. Physical, auditory, and vestibular evaluations are usually normal. The most frequent vestibular abnormality was hyperreflexia. Most individuals showed abnormality related to carbohydrate metabolism.

          Resumo

          Introdução

          Migrânea vestibular (MV) corresponde a um dos mais frequentes diagnósticos em otoneurologia, o que justifica a importância de seu estudo, embora tenha sido apenas recentemente reconhecida como entidade nosológica.

          Objetivo

          Analisar os perfis clínico e epidemiológico dos pacientes atendidos em um ambulatório de migrânea vestibular.

          Método

          Estudo retrospectivo, observacional e descritivo, com análise de prontuários dos pacientes do ambulatório de MV.

          Resultados

          O ambulatório é composto por 94,1% de mulheres e 5,9% de homens, com média de idade 46,1 anos. O tempo de cefaleia foi superior ao de vertigem em 65,6% dos pacientes. Observou-se correlação entre os sintomas e o período menstrual. A maioria (61,53%) dos indivíduos apresentou algum sintoma auditivo, sendo o zumbido o mais frequente, embora a audiometria tenha sido normal em 68,51%. A vectoeletronistagmografia apresentou-se normal em 67,34%, enquanto 10,20% apresentaram hiporreflexia e 22,44% hiperreflexia vestibular. Exames eletrofisiológicos não mostraram alterações na maioria dos pacientes. Glicemia de jejum e curva glicêmica foram normais para a maioria dos pacientes, enquanto a curva insulinêmica mostrou-se alterada em 75% dos indivíduos. 82% dos indivíduos com MV apresentaram alguma alteração relativa ao metabolismo dos carboidratos.

          Conclusão

          Migrânea vestibular acomete, predominantemente, mulheres de meia idade, com cefaleia migranosa e vertigem, sendo a primeira de instalação mais precoce. O exame físico no período intercrise, bem como as avaliações auditiva e vestibular, mostram-se, geralmente, normais. O tipo de alteração vestibular mais observado foi a hiperreflexia labiríntica. A maioria os indivíduos avaliados apresentou alterações relativas ao metabolismo dos carboidratos.

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          Most cited references36

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          The International Classification of Headache Disorders, 3rd edition (beta version).

          (2013)
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            The interrelations of migraine, vertigo, and migrainous vertigo.

            To assess the prevalence of migrainous vertigo in patients with migraine and in patients with vertigo according to explicit diagnostic criteria that are presented for discussion. The authors prospectively evaluated 200 consecutive patients from a dizziness clinic and 200 patients from a migraine clinic for migrainous vertigo based on the following criteria: 1) recurrent vestibular symptoms (rotatory/positional vertigo, other illusory self or object motion, head motion intolerance); 2) migraine according to the criteria of the International Headache Society (IHS); 3) at least one of the following migrainous symptoms during at least two vertiginous attacks: migrainous headache, photophobia, phonophobia, visual or other auras; and 4) other causes ruled out by appropriate investigations. In addition, the authors compared the prevalence of migraine according to the IHS criteria in the dizziness clinic group with a sex- and age-matched control group of 200 orthopedic patients. The prevalence of migraine according to the IHS criteria was higher in the dizziness clinic group (38%) compared with the age- and sex-matched control group (24%, p < 0.01). The prevalence of migrainous vertigo was 7% in the dizziness clinic group, and 9% in the migraine clinic group. In 15 of 33 patients with migrainous vertigo, vertigo was regularly associated with migrainous headache. In 16 patients, vertigo occurred both with and without headache, and in two patients headache and vertigo never occurred together. The duration of attacks varied from minutes to days. These results substantiate the epidemiologic association between migraine and vertigo and indicate that migrainous vertigo affects a significant proportion of patients both in dizziness and headache clinics.
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              Episodic vertigo related to migraine (90 cases): vestibular migraine?

              A retrospective study was conducted on 90 patients with episodic vertigo that could be related to migraine as the most probable pathomechanism. Since the majority of the patients did not fulfill the criteria of the International Headache Society (IHS) for basilar migraine, the diagnosis was substantiated by disease course, medical efficacy in treating (ergotamines) and preventing (metoprolol, flunarizine) attacks, ocular motor abnormalities in the symptom-free interval, and careful exclusion of the most relevant differential diagnoses, such as transient ischemic attacks, Menière's disease, and vestibular paroxysmia. The following clinical features were elaborated. The initial manifestation could occur at any time throughout life, with a peak in the fourth decade in men and a "plateau" between the third and fifth decades in women. The duration of rotational (78%) and/or to-and-fro vertigo (38%) could last from a few seconds to several hours or, less frequently, even days; duration of a few minutes or of several hours was most frequent. Monosymptomatic audiovestibular attacks (78%) occurred as vertigo associated with auditory symptoms in only 16%. Vertigo was not associated with headache in 32% of the patients. In the symptom-free interval 66% of the patients showed mild central ocular motor signs such as vertical (48%) and/or horizontal (22%) saccadic pursuit, gaze-evoked nystagmus (27%), moderate positional nystagmus (11%), and spontaneous nystagmus (11%). Combinations with other forms of migraine were found in 52%. Thus, migraine is a relevant differential diagnosis for episodic vertigo. According to the criteria of the IHS, only 7.8% of these patients would be diagnosed as having basilar migraine. However, to ensure that at least those presenting with monosymptomatic episodic vertigo (78% in our study) receive effective treatment, we propose the use of the more appropriate term "vestibular migraine."
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                Author and article information

                Contributors
                Journal
                Braz J Otorhinolaryngol
                Braz J Otorhinolaryngol
                Brazilian Journal of Otorhinolaryngology
                Elsevier
                1808-8694
                1808-8686
                29 October 2015
                Jul-Aug 2016
                29 October 2015
                : 82
                : 4
                : 397-402
                Affiliations
                [0005]Department of Otorhinolaryngology and Head and Neck Surgery, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
                Author notes
                [* ]Corresponding author. ligia_og@ 123456yahoo.com.br
                Article
                S1808-8694(15)00181-0
                10.1016/j.bjorl.2015.06.003
                9449005
                26614042
                9247efb5-a23e-471c-b7f1-a7553ecbbfec
                © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda.

                This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

                History
                : 21 May 2015
                : 17 June 2015
                Categories
                Original Article

                vestibular migraine,vertigo,migraine disorders,dizziness,migrânea vestibular,vertigem,transtornos de enxaqueca,tontura

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