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To the Editor:
We read with interest the article by Tan et al. reporting a lack of association between hemifacial spasm (HFS) and arterial hypertension.1 We noted similar negative findings in another ethnic group. We conducted a case-control study to determine whether hypertension occurs more frequently among patients with HFS than normal controls. This study was part of a larger descriptive study on the clinical features of HFS, which has been published only in abstract form.2 Patients were selected during a 6-year period from consecutive HFS-affected persons attending a single neurologic center. Primary HFS was diagnosed in 55 subjects (27 men and 28 women, mean ± SD age 62.2 ± 12.5 years) in accordance with published criteria. Mean disease duration was 7.2 ± 5.3 years. HFS was left-sided in 30 patients and right-sided in 25. All but two patients were Italian. Information was obtained by means of …
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