The purpose of this study is to determine the efficacy of erenumab in a loading dose of 280mg followed by 140mg after 4 weeks compared to placebo as a prophylactic treatment in patients with chronic cluster headache.~This study has a 10-week 2-arm, randomized, double-blind, parallel- group, placebo-controlled design. Data from this study will provide important information if the blockade of the CGRP receptor with erenumab is an efficacious principle for the treatment of chronic cluster headache
The main purpose of this study is to evaluate the efficacy of erenumab in participants with chronic cluster headache.