PainChronic PainPain ManagementPain ThresholdPain, PostoperativeLow Back PainBack PainPain MeasurementAbdominal PainNeck PainPain, IntractablePelvic PainPain PerceptionFacial PainAcute PainPain, ReferredShoulder PainMusculoskeletal PainAnalgesicsNociceptive PainNeuralgiaAnalgesics, OpioidHyperalgesiaChronic DiseaseMyofascial Pain SyndromesComplex Regional Pain SyndromesVisceral PainArthralgiaAnalgesiaLabor PainTreatment OutcomeNociceptorsTime FactorsDouble-Blind MethodQuestionnairesAnesthetics, LocalFibromyalgiaDisability EvaluationCatastrophizationFlank PainDisease Models, AnimalProspective StudiesEye PainMorphineAnalgesics, Non-NarcoticSeverity of Illness IndexInjections, SpinalMagnetic Resonance ImagingAnalysis of VarianceLidocaineNerve BlockSciaticaSpecies SpecificityToothacheFollow-Up StudiesRats, Sprague-DawleyOsteoarthritis, KneeQuality of LifeNociceptionDose-Response Relationship, DrugSpinal CordSpinal NervesPhysical Therapy ModalitiesHot TemperatureKnee JointPhantom LimbMusculoskeletal DiseasesPan troglodytesCross-Over StudiesRange of Motion, ArticularTrigeminal NeuralgiaTemporomandibular Joint DisordersPeripheral Nervous System DiseasesRadiculopathyMolecular Sequence DataBehavior, AnimalTranscutaneous Electric Nerve StimulationAnti-Inflammatory Agents, Non-SteroidalTramadolLumbosacral RegionCyclohexanecarboxylic AcidsOxycodoneAcupuncture AnalgesiaIntervertebral Disc DisplacementBrainBupivacaineOsteoarthritisRetrospective StudiesMuscle, SkeletalHominidaeAcute DiseasePrevalenceCross-Sectional StudiesHeadacheFentanylAnxietyInjections, Intra-ArticularSingle-Blind MethodGanglia, SpinalActivities of Daily Living