HematomaHematoma, Epidural, CranialHematoma, SubduralHematoma, Subdural, ChronicHematoma, Subdural, AcuteHematoma, Epidural, SpinalHematoma, Subdural, IntracranialInjectionsHematoma, Subdural, SpinalCerebral HemorrhageTrephiningTomography, X-Ray ComputedCraniotomyInjections, IntravenousInjections, IntramuscularSubdural SpaceInjections, IntralesionalInjections, SubcutaneousTreatment OutcomePain MeasurementSkull FracturesInjections, Intra-ArticularAsthenopiaPainTime FactorsHuman EngineeringCerebral Hemorrhage, TraumaticInjections, IntraperitonealDura MaterBasal Ganglia HemorrhageCraniocerebral TraumaMagnetic Resonance ImagingInjections, Intra-ArterialEsophageal DiseasesGlasgow Coma ScaleProspective StudiesNeurosurgical ProceduresAnesthesia, LocalRectus AbdominisSuctionInjections, IntraventricularPostoperative ComplicationsIntracranial HemorrhagesHead Injuries, ClosedDrainageInjections, IntradermalInjections, EpiduralSubdural EffusionAnesthetics, LocalAbdominal PainRetrospective StudiesComputer TerminalsRetroperitoneal SpaceNeedlesCranial Fossa, PosteriorLaminectomyRemission, SpontaneousLidocaineIntravitreal InjectionsInjections, SpinalHeadacheAcute DiseasePatient SatisfactionLigamentum FlavumIntracranial Hemorrhage, HypertensiveInjections, JetCerebral AngiographyFatal OutcomeInjections, IntraocularPain, PostoperativeQuestionnairesAnticoagulantsExtravasation of Diagnostic and Therapeutic MaterialsArachnoid CystsEquipment DesignDecompression, SurgicalBrain Hemorrhage, TraumaticDouble-Blind MethodBrain EdemaWounds, NonpenetratingFollow-Up StudiesRats, Sprague-DawleySubarachnoid HemorrhageRupture, SpontaneousOrbital DiseasesGlasgow Outcome ScaleAnesthesia, DentalSpinal Cord CompressionDisease Models, AnimalTomography Scanners, X-Ray ComputedIrritable Bowel SyndromePain PerceptionRecovery RoomArachnoidStereotaxic TechniquesDose-Response Relationship, DrugFlow Injection AnalysisAdministration, BuccalSensationMicroinjections