Fig. 3

Graphs showing change in mean monthly headache days before and after commencing erenumab. Three months of baseline data (month 0, 1, 2) is followed by 9 months of post-treatment data (month 3–11). Red days signify days with headaches that limit activities of daily living, amber days signify days with headache but not limiting activities of daily living, and green days signify days free of any headache. Error bars represent standard error of the mean