Migraine DisordersMigraine with AuraHeadacheMigraine without AuraAspirinSumatriptanTension-Type HeadacheTryptaminesHeadache DisordersErgotamineStudents, Public HealthDura MaterMeningesForamen Ovale, PatentTrigger PointsCluster HeadacheMeningeal ArteriesTrigeminal NerveSerotonin Receptor AgonistsErgotismVascular HeadachesHeadache Disorders, SecondaryAnalgesicsTrigeminal GanglionCalcitonin Gene-Related PeptideReceptors, Calcitonin Gene-Related PeptidePain MeasurementPhotophobiaPrevalenceTreatment OutcomeCortical Spreading DepressionAnti-Inflammatory Agents, Non-SteroidalDihydroergotaminePlatelet Aggregation InhibitorsProspective StudiesPizotylineRetrospective StudiesRats, Sprague-DawleyHeadache Disorders, Primary