Relief WorkPain MeasurementPainPain, IntractablePain, PostoperativePain ManagementTreatment OutcomeAnalgesicsAnesthetics, LocalAnalgesics, OpioidNerve BlockDouble-Blind MethodAnalgesia, ObstetricalAnalgesiaPalliative CareLabor PainBupivacaineTrigeminal NeuralgiaAnalgesia, EpiduralInjections, EpiduralZygapophyseal JointInjections, Intra-ArticularRadiculopathyElectric Stimulation TherapyCeliac PlexusMorphineAnalgesia, Patient-ControlledFollow-Up StudiesBack PainMeperidineAnalgesics, Non-NarcoticChronic DiseaseNeuralgiaTramadolLow Back PainPatient SatisfactionHeartburnDisastersTranscutaneous Electric Nerve StimulationTime FactorsEarthquakesAcupuncture AnalgesiaLidocaineFentanylHydromorphoneInjections, SpinalProspective StudiesPostoperative ComplicationsAcupuncture TherapyTryptaminesChronic PainLumbar VertebraeRetrospective StudiesAnti-Inflammatory Agents, Non-SteroidalDecompression, SurgicalVertebroplastyParesthesiaCodeineFluoroscopyCausalgiaAbdominal PainFractures, CompressionPruritusArthralgiaPlacebo EffectIntervertebral Disc DisplacementMigraine DisordersOpiumEpidural SpaceAnesthesia, EpiduralKetorolacAcetaminophenKetoprofenPlacebosSpinal NeoplasmsAnesthesia, CaudalIrritable Bowel SyndromeElectrocoagulationRandomized Controlled Trials as TopicNizatidineHistamine H2 AntagonistsOrthopedic ProceduresRange of Motion, ArticularDiclofenac2-PyridinylmethylsulfinylbenzimidazolesAnesthesia, LocalSpinal FracturesDisaster PlanningDiskectomy, PercutaneousPelvic PainOsteoarthritisLabor, ObstetricQuality of LifeLumbosacral RegionFailed Back Surgery SyndromeButorphanolClinical Trials as TopicDysmenorrheaOxycodoneSpasm