title: Pathophysiology of chronic migraine and mode of action of preventive medications: a comment.
authors.forename: James A
authors.initials: JA
authors.lastname: Charles
mesh_terms: D000700:Analgesics / Q000627:therapeutic use*; D000818:Animals; D006801:Humans; D008881:Migraine Disorders / Q000503:physiopathology* / Q000517:prevention & control*
chemical_list: D000700:Analgesics