Fig. 3From: A study to investigate the prevalence of headache disorders and migraine among people registered in a health insurance association in JapanPrevalence of headaches. * The prevalence of migraine (including probable migraine) is as shown in the figure above. ** The prevalence of tension-type headache (including probable tension-type headache) was 6.7% (1441 patients), including concomitant probable migraine (3 patients), concomitant migraine (3 patients), and probable migraine (36 patients). † The prevalence of cluster headache was 0.1% (21 patients), including concomitant migraine (2 patients) and probable migraine (6 patients)Back to article page