[Recommendations for prophylactic treatment of migraine: Consensus of the Sociedade Brasileira de Cefaléia].

The Brazilian Headache Society assigned an Ad Hoc Committee with the purpose of establishing a consensus about prophylactic treatment for migraine and of elaborating recommendations for professionals. The recommendations of the Committee are based in evidences of the world medical literature and on the personal experience of the members, respecting the reality of the existing medication resources in our country.