Migraine DisordersHeadacheMigraine with AuraAspirinSumatriptanTension-Type HeadacheMigraine without AuraTryptaminesHeadache DisordersErgotamineStudents, Public HealthDura MaterMeningesTrigger PointsCluster HeadacheForamen Ovale, PatentMeningeal ArteriesTrigeminal NerveErgotismSerotonin Receptor AgonistsVascular HeadachesTrigeminal GanglionHeadache Disorders, SecondaryAnalgesicsCalcitonin Gene-Related PeptideReceptors, Calcitonin Gene-Related PeptidePain MeasurementPrevalenceTreatment OutcomeAnti-Inflammatory Agents, Non-SteroidalPlatelet Aggregation InhibitorsProspective StudiesPhotophobiaRetrospective StudiesRats, Sprague-DawleyDihydroergotamineCortical Spreading DepressionTiclopidineThromboxane B2