Disclosed herein are methods of treating or reducing incidence of migraine and/or at least one secondary symptom associated with refractory migraine in a subject having refractory migraine comprising administering to the subject a 5 monoclonal antibody that modulates the CGRP pathway. Compositions for use in the disclosed methods are also provided. Antagonist antibody G1 and antibodies derived from G1 directed to CGRP are also described.
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