Cluster headache in Asian populations: Similarities, disparities, and a narrative review of the mechanisms of the chronic subtype

Headache disorders like migraine show geographic and ethnic differences between Asian and European/North American countries. In cluster headache, these differences are rarely mentioned and discussed. This article aimed to review the characteristics of cluster headache in Asian countries and compare the clinical features to those in European and North American populations.We conducted a narrative literature review on the demographics, clinical...