PainPain ManagementChronic PainPain ThresholdPain, PostoperativeLow Back PainBack PainPain MeasurementAbdominal PainPain, IntractableNeck PainPelvic PainPain PerceptionFacial PainAcute PainPain, ReferredTreatment OutcomeShoulder PainMusculoskeletal PainAnalgesicsDouble-Blind MethodNeuralgiaNociceptive PainAnalgesics, OpioidChronic DiseaseHyperalgesiaMyofascial Pain SyndromesTime FactorsProspective StudiesComplex Regional Pain SyndromesVisceral PainAnalgesiaArthralgiaFollow-Up StudiesDrug Therapy, CombinationLabor PainDose-Response Relationship, DrugDrug Administration ScheduleAnesthetics, LocalQuestionnairesSeverity of Illness IndexNociceptorsDisease Models, AnimalFibromyalgiaAdministration, OralDisability EvaluationRandomized Controlled Trials as TopicDrug CombinationsRetrospective StudiesAnalgesics, Non-NarcoticMorphineCatastrophizationQuality of LifeFlank PainAnti-Inflammatory Agents, Non-SteroidalEye PainLidocainePilot ProjectsClinical Trials as TopicAntineoplastic AgentsInjections, SpinalNerve BlockSingle-Blind MethodOsteoarthritis, KneeAnalysis of VarianceRats, Sprague-DawleyNeoplasmsSciaticaRecurrenceToothacheAdministration, TopicalAcute DiseaseTramadolPhysical Therapy ModalitiesCyclohexanecarboxylic AcidsOxycodoneInjections, Intra-ArticularPeripheral Nervous System DiseasesRadiculopathySpinal NervesBupivacaineCombined Modality TherapyRange of Motion, ArticularNociceptionMagnetic Resonance ImagingKnee JointPhantom LimbSafetyAnti-Bacterial AgentsSpinal CordMusculoskeletal DiseasesInjections, IntramuscularCross-Over StudiesHeadachePlacebosTrigeminal NeuralgiaExercise TherapyTranscutaneous Electric Nerve StimulationTemporomandibular Joint DisordersOsteoarthritis