recent advances in migraine therapy include the recognition of analgesic or ergotamine abuse as a cause of chronic daily migraine , the introduction of effective non-narcotic drugs such as chlorpromazine , dihydroergotamine and corticosteroids for the treatment of intractable migraine attacks , the increased number of beta-blockers now recognized as effective prophylactic agents and the introduction of calcium-channel blockers for prophylaxis .
C0149931
migraine
C1960870
chronic