Migraine DisordersHeadacheMigraine with AuraSumatriptanTension-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 OutcomeRetrospective StudiesProspective StudiesPhotophobiaDelayed DiagnosisEarly DiagnosisCortical Spreading DepressionRats, Sprague-DawleyPrenatal DiagnosisDihydroergotamineSensitivity and SpecificityNeurologyMagnetic Resonance Imaging