Abstract

hronic daily headache characteristically develops headaches more than 15 days per month. This is not a disease entity but a syndrome which encompasses various primary and secondary headaches, and usually associated with medication overuse. Chronic daily headache is common as 3～5% of general population suffer, and causes profound disability which makes patients' quality of life miserable. Proper strategy of prevention and treatment of chronic daily headache is important because it makes prophylactic management useful and blocks perpetuation of headache. This review summarizes recent advances in management of chronic daily headache with a focus on the treatment of medication- overuse headache.