The literature on acute treatment of primary headache disorders is vast, spanning multiple decades. In general, recent research has focused more on treatment of migraines than other primary headache disorders. Nonetheless, because of inherent misclassification of headaches in research, the common pain pathway, and our underdiagnosis of migraines in the ED, we believe much of the migraine treatment literature can be generalized to all primary headache disorders.39-41
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