NaloxoneReceptors, Opioid, muReceptors, OpioidAnalgesics, OpioidNarcotic AntagonistsReceptors, Opioid, deltaReceptors, Opioid, kappaOpioid PeptidesMorphineOpioid-Related DisordersEndorphinsNoonan SyndromeNarcoticsEnkephalinsMental DisordersNaltrexoneBuprenorphineLEOPARD SyndromeStress Disorders, TraumaticParasomniasBipolar DisorderEnkephalin, Ala(2)-MePhe(4)-Gly(5)-MasturbationSchizophreniaDiagnostic and Statistical Manual of Mental DisordersEnvironmental RemediationEnkephalin, LeucineStress Disorders, Traumatic, AcutePsychotic DisordersBrainMood DisordersSyndromeObsessive-Compulsive DisorderAnxiety Disordersbeta-EndorphinEnkephalin, D-Penicillamine (2,5)-DynorphinsSocieties, NursingMarfan SyndromeAutistic DisorderPachyonychia Congenitaalpha-SynucleinAnalgesicsMorphine DependenceEnkephalin, Leucine-2-AlanineFrasier SyndromeAbnormalities, MultipleEnkephalin, MethioninePainSubstance Withdrawal SyndromeMutationMorphinansDrug ToleranceSupranuclear Palsy, ProgressiveKidney Diseases, CysticDiprenorphinePhenotypePsychiatric Status Rating ScalesAlzheimer DiseaseDrug OverdoseSchizophrenic PsychologyPain MeasurementChernobyl Nuclear AccidentFentanylCerebellar DiseasesParkinson DiseaseEctodermal DysplasiaDepressive Disorder, MajorAntipsychotic AgentsBenzeneacetamidesSubstance-Related DisordersDose-Response Relationship, DrugDisease Models, AnimalMethadoneAttention Deficit Disorder with HyperactivityLevorphanolDepressive DisorderCognition DisordersSynucleinsNeuronsComorbidityTime FactorsLewy BodiesPyrrolidinesAlcoholismHeroinStress Disorders, Post-TraumaticHydromorphoneCyclazocineAnalysis of VariancePedigreeHeroin DependenceInjections, SpinalDementiaRisk FactorsLoperamidePhobic DisordersPentazocineRats, Sprague-DawleyGenetic Predisposition to Disease