The Canadian Headache Society (CHS) is an organization of health care professionals in Canada devoted to headache care, research and education. CHS makes recommendations for the diagnostic criteria[1] as well as guidelines for the nonpharmacologic and pharmacological management of migraine headache in clinical practice.[2][3] Headache Network Canada – a Canadian registered charity – and CHS maintain an educational website in joint partnership on the subject of headache disorders; both for the general public and health care professionals.