PainChronic PainPain ManagementPain ThresholdPain, PostoperativeLow Back PainBack PainPain MeasurementAbdominal PainNeck PainPain, IntractablePenaeidaePain PerceptionFacial PainAcute PainPain, ReferredShoulder PainMusculoskeletal PainAnalgesicsNociceptive PainNeuralgiaAnalgesics, OpioidMyofascial Pain SyndromesHyperalgesiaComplex Regional Pain SyndromesChronic PainVisceral PainArthralgiaAnalgesiaLabor PainTreatment OutcomeNociceptorsFibromyalgiaQuestionnairesAnesthetics, LocalDisability EvaluationCatastrophizationFlank PainEyeglassesProspective StudiesMorphineDouble-Blind MethodAnalgesics, Non-NarcoticSeverity of Illness IndexInjections, SubcutaneousSciaticaToothacheLidocaineNerve BlockOsteoarthritis, KneeTime FactorsQuality of LifeFollow-Up StudiesNociceptionPhysical Therapy ModalitiesSpinal NervesPhantom LimbMusculoskeletal DiseasesTrigeminal NeuralgiaTemporomandibular Joint DisordersKnee JointRadiculopathyRange of Motion, ArticularPeripheral Nervous System DiseasesSpinal CordTranscutaneous Electric Nerve StimulationAcupuncture AnalgesiaTramadolIntervertebral Disc DisplacementLumbosacral RegionOxycodoneCyclohexanecarboxylic AcidsBupivacaineAnti-Inflammatory Agents, Non-SteroidalHot TemperatureOsteoarthritisHeadacheInjections, Intra-ArticularRetrospective StudiesAnalgesia, Patient-ControlledActivities of Daily LivingFacial NeuralgiaExercise TherapyAcupuncture TherapyMagnetic Resonance ImagingCross-Sectional StudiesGanglia, SpinalPalliative CareInjections, EpiduralRats, Sprague-DawleyFentanylAnalysis of VarianceZygapophyseal JointAnesthesia, LocalPosterior Horn CellsHypesthesiaAnxietyAcute DiseasePrevalenceTemporomandibular Joint Dysfunction Syndrome