Dura MaterSubarachnoid HemorrhageSubarachnoid SpaceArachnoidPia MaterParietal BoneMeningeal ArteriesVasospasm, IntracranialCranial SuturesMeningesCraniotomySumatriptanLaminectomyIntracranial AneurysmEpidural SpaceTrigeminal NerveHematoma, SubduralCerebrospinal Fluid RhinorrheaNeurosurgical ProceduresAneurysm, RupturedCraniosynostosesCreutzfeldt-Jakob SyndromeSkullMeningiomaMeningeal NeoplasmsPneumocephalusForamen MagnumSkull BaseSpinal CanalTomography, X-Ray ComputedTissue TransplantationFrontal BoneCerebral AngiographyMeningitisCalcitonin Gene-Related PeptideBasilar ArteryScalpIsoindolesCadaverMyelographyTrigeminal GanglionTrigeminal Nucleus, SpinalSpinal Cord CompressionLongitudinal LigamentsPolytetrafluoroethyleneHeadacheMagnetic Resonance ImagingMigraine DisordersLigamentum FlavumSpinal PunctureHematoma, Epidural, CranialSubarachnoid Hemorrhage, Traumatic