PainInjectionsPain ManagementChronic PainPain ThresholdPain, PostoperativeBack PainLow Back PainPain MeasurementNeck PainAbdominal PainPain, IntractablePain PerceptionPelvic PainFacial PainInjections, IntramuscularInjections, IntravenousAcute PainPain, ReferredInjections, Intra-ArticularInjections, SubcutaneousShoulder PainInjections, IntralesionalMusculoskeletal PainInjections, IntraperitonealAnalgesicsInjections, EpiduralInjections, SpinalNeuralgiaInjections, IntraventricularInjections, IntradermalNociceptive PainAnalgesics, OpioidHyperalgesiaTime FactorsInjections, Intra-ArterialAnesthetics, LocalIntravitreal InjectionsRats, Sprague-DawleyTreatment OutcomeInjections, JetChronic DiseaseMyofascial Pain SyndromesInjections, IntraocularVisceral PainDisease Models, AnimalComplex Regional Pain SyndromesArthralgiaAnalgesiaLidocaineNociceptorsMicroinjectionsDose-Response Relationship, DrugFlow Injection AnalysisLabor PainNeedlesMorphineProspective StudiesDouble-Blind MethodNerve BlockSubstance Abuse, IntravenousQuestionnairesRats, WistarMice, Inbred C57BLSperm Injections, IntracytoplasmicSyringesDisability EvaluationTriamcinoloneFibromyalgiaSpinal CordAnalgesics, Non-NarcoticRadiculopathyBehavior, AnimalTriamcinolone AcetonideEye PainCatastrophizationNeuromuscular AgentsBupivacaineFlank PainAnalysis of VarianceSeverity of Illness IndexBotulinum Toxins, Type ASciaticaVitreous BodyAnesthesia, LocalNociceptionKnee JointFreund's AdjuvantRabbitsLumbosacral RegionBrainTissue DistributionOsteoarthritis, KneeMice, Inbred BALB CSpinal NervesMagnetic Resonance ImagingAnti-Inflammatory Agents, Non-SteroidalRats, Inbred StrainsRetrospective StudiesPregnancy