Chronic PainPainPain ClinicsAnalgesics, OpioidPain MeasurementChronic DiseaseOpioid-Related DisordersCarisoprodolPain ManagementCatastrophizationPain, IntractableDrug IncompatibilityHydrocodoneSubstance Abuse DetectionOxycodoneFibromyalgiaAnalgesicsUrinalysisLow Back PainDrug MonitoringPain ThresholdQuestionnairesBack PainFacial PainDisability EvaluationMusculoskeletal PainAdaptation, PsychologicalNeck PainNeuralgiaChest PainPain, ReferredDepressionPain, PostoperativePain PerceptionAcute PainPelvic PainHyperalgesiaHydromorphoneAbdominal PainTemporomandibular Joint DisordersShoulder PainTreatment OutcomeAnalgesiaNociceptorsMorphineNociceptive PainIntervertebral Disc DisplacementComplex Regional Pain SyndromesActivities of Daily LivingReproducibility of ResultsAnxietyProspective StudiesManipulation, SpinalStreet DrugsSeverity of Illness IndexQuality of LifePsychometricsTime FactorsArthralgiaPhysical Therapy ModalitiesPhysical StimulationAbsenteeismMyofascial Pain SyndromesPatellofemoral Pain SyndromeDisabled PersonsPredictive Value of TestsCross-Sectional StudiesFollow-Up StudiesCentral Nervous System SensitizationEmergency Service, HospitalAnalysis of VariancePrimary Health CareNociceptionPrevalenceFearInjections, SpinalSingle-Blind MethodDouble-Blind MethodStress, PsychologicalSpinal CordRetrospective StudiesSick LeaveAcute DiseaseClinical ProtocolsRisk FactorsTriageHernia, InguinalCohort StudiesAnalgesics, Non-NarcoticAnesthetics, LocalExercise TherapyLumbar VertebraeVisceral PainSensitivity and SpecificityTroponin TPosterior Horn CellsSpinal NervesChi-Square DistributionMagnetic Resonance ImagingRisk Assessment