Complex Regional Pain SyndromesReflex Sympathetic DystrophyAnesthetics, DissociativePain MeasurementAnalgesicsPain, IntractableAdjuvants, PharmaceuticXylazineForearm InjuriesSympathetic Fibers, PostganglionicAutonomic Nerve BlockExcitatory Amino Acid AntagonistsBlisterHyperalgesiaAnesthetics, CombinedChronic PainAnestheticsMidazolamThiopentalPainReceptors, N-Methyl-D-AspartateDepressive Disorder, Treatment-ResistantPain ThresholdNeuralgiaAcepromazineAnesthesia, IntravenousAnesthetics, IntravenousKetamineConscious SedationPropofolAnesthesiaStereoisomerismMedetomidineAdjuvants, AnesthesiaNociceptorsPentobarbitalAnesthesia, CaudalCold TemperaturePsychoses, Substance-InducedDose-Response Relationship, DrugAnesthesia, GeneralPreanesthetic MedicationHandPain, PostoperativeBrainTiletamineDouble-Blind MethodAnalgesiaInjections, IntramuscularAnalgesics, OpioidInflammationSkinAntidepressive AgentsWounds and InjuriesInflammation MediatorsMorphineNeural PathwaysTreatment OutcomeFentanylDrug InteractionsRats, Sprague-DawleyZolazepamPhencyclidineProspective StudiesSensory ThresholdsMemantineInjections, SpinalChronic DiseaseEtomidateHallucinogensDizocilpine MaleateAnesthesia, DentalRespirationDexmedetomidineDiazepamDextromethorphanNeural ConductionAmnesia, AnterogradeInfusions, IntravenousN-MethylaspartateAnesthesia Recovery PeriodRiluzole