title: Prevalence of typical migraine aura without headache in Japanese ophthalmology clinics.
abstract: The aim of this study was to investigate the prevalence and characteristics of typical aura without headache (TAWH) in Japan. We distributed a self-report questionnaire comprising seven items. Of 1914 cases, the number of patients who provided valid answers was 1063. They included 1063 out-patients with 81 of these patients positive in the ID migraine screener Japanese version. TAWH was diagnosed in 35 patients (3.2%), aged 23-87 years, and included 12 males and 23 females. The age of patients with TAWH showed a biphasic distribution (20-39 years and 60-69 years), similar to the age distribution of all patients. Migraine with aura was diagnosed in 67 patients (6.3%) and showed a monophasic age distribution (40-49 years). These data suggest that TAWH is not a rare headache type in clinics especially in a setting of general ophthalmology clinics, and some patients of migraine with aura may transform to TAWH with ageing.
authors.affiliation: Department of Neurology, Dokkyo Medical University, Tochigi, Japan.
authors.forename: Saiko
authors.initials: S
authors.lastname: Aiba
authors.forename: Muneto
authors.initials: M
authors.lastname: Tatsumoto
authors.forename: Akihiro
authors.initials: A
authors.lastname: Saisu
authors.forename: Hisatake
authors.initials: H
authors.lastname: Iwanami
authors.forename: Keizou
authors.initials: K
authors.lastname: Chiba
authors.forename: Tadashi
authors.initials: T
authors.lastname: Senoo
authors.forename: Koichi
authors.initials: K
authors.lastname: Hirata
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D000554:Ambulatory Care Facilities; D044466:Asian People; D005260:Female; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D020325:Migraine with Aura / Q000453:epidemiology*; D009885:Ophthalmology; D010045:Outpatients; D015995:Prevalence; D011795:Surveys and Questionnaires; D055815:Young Adult