MorphineMorphine DependenceMorphine DerivativesChild AbuseAnalgesics, OpioidChild Abuse, SexualNarcoticsDrug ToleranceNaloxoneElder AbuseReceptors, Opioid, muNarcotic AntagonistsSpouse AbuseSubstance-Related DisordersAdult Survivors of Child AbuseAnalgesiaSubstance Withdrawal SyndromeCodeinePain MeasurementInjections, SpinalSubstance Abuse Treatment CentersSubstance Abuse DetectionPain, PostoperativeMarijuana AbuseAnalgesicsPainHeroinOxycodoneNaltrexoneReceptors, OpioidDose-Response Relationship, DrugNalorphineHydromorphoneOpioid-Related DisordersAnalgesia, Patient-ControlledRats, Sprague-DawleyStreet DrugsAlcoholismFentanylEnkephalin, Ala(2)-MePhe(4)-Gly(5)-PentazocinePeriaqueductal GrayMorphinansEnkephalinsMethadoneNalbuphineReceptors, Opioid, deltaBehavior, AnimalMandatory ReportingSex OffensesOpiumCocaineMeperidineThebaineHydrocodoneOxymorphonePain ThresholdBuprenorphineAnalgesia, EpiduralDrug InteractionsMethamphetamineReceptors, Opioid, kappaPhencyclidine AbuseEndorphinsCocaine-Related DisordersInjections, SubcutaneousTime FactorsDouble-Blind MethodSpinal CordTramadolHuman Rights AbusesPain, IntractableInjections, IntraventricularMotor ActivityBehavior, AddictiveConditioning, OperantLocus CoeruleusInjections, IntravenousPapaverLevallorphanUnited States Substance Abuse and Mental Health Services AdministrationNucleus AccumbensDomestic ViolenceAmphetamine-Related DisordersHyperalgesiaCentral Nervous System StimulantsEtorphineUnited StatesSelf AdministrationBupivacaineRewardAnalgesics, Non-NarcoticPruritusBrainCrime VictimsClonidine