“…The studies included in this systematic review were published between 2004 and 2019 and the sample size ranging between 86 in Turkey and 1109 in China. Of 17 studies included the final meta-analysis, one from the USA [34], one from India [35], three from Iran [36][37][38], one from Japan [26], one from Taiwan [35], one from Italy [36], three from China [25,39,40], one from Turkey [41], one from Lithuania [42], one from Montenegro [43], one from Bangladesh [44] and two from Egypt [45,46]. Regarding types of headaches assessed among patients with epilepsy, nine studies assessed tension-type headache, fifteen studies assessed migraine with aura, three studies assessed migraine without aura, and seven studies assessed both Ictal headache (IH) and Postictal headache (PIH).…”