D.D. GAYNETDINOVA, А.I. VASILEV, F.F. AGLIULLINA  Kazan State Medical University, Kazan Contact details: Gaynetdinova D.D. — MD, Professor of the Department of Neurology Address: 49 Butlerov St., Kazan, Russian Federation, 420012, tel.: +7 (843) 236-04-11, e-mail: anetdina@mail.ru The prevalence of cluster headaches is about 0.4–1% in the general population and is more common than epilepsy and parkinsonism. […]