Migraine DisordersMigraine without AuraMigraine with AuraPizotylineTryptaminesHabituation, PsychophysiologicSumatriptanTension-Type HeadacheHeadache DisordersCerebrumHyperesthesiaTrigeminal NerveSerotonin Receptor AgonistsPain ThresholdCluster AnalysisAnalgesicsEvoked Potentials, VisualPain MeasurementAnisotropyCase-Control StudiesPainHeadacheCerebral CortexQuestionnairesMultigene FamilyBrainMagnetic Resonance ImagingPhotophobiaCortical Spreading DepressionErgotamine