MethadoneAnalgesics, OpioidReceptors, Opioid, muReceptors, OpioidNarcoticsOpioid-Related DisordersReceptors, Opioid, deltaOpiate Substitution TreatmentReceptors, Opioid, kappaHeroin DependenceOpioid PeptidesBuprenorphineNarcotic AntagonistsMethadyl AcetateNaloxoneMental DisordersNoonan SyndromeHeroinLEOPARD SyndromeStress Disorders, TraumaticNeonatal Abstinence SyndromeParasomniasBipolar DisorderMorphineNaltrexoneMasturbationSchizophreniaDiagnostic and Statistical Manual of Mental DisordersEnvironmental RemediationStress Disorders, Traumatic, AcuteMood DisordersPsychotic DisordersSubstance-Related DisordersSyndromeObsessive-Compulsive DisorderAnxiety DisordersBrainPyrrolidinesSocieties, NursingMarfan SyndromeAutistic DisorderPachyonychia Congenitaalpha-SynucleinEnkephalinsSubstance Abuse DetectionFrasier SyndromeAbnormalities, MultipleSubstance Withdrawal SyndromeEnkephalin, Ala(2)-MePhe(4)-Gly(5)-Drug OverdosePainMutationPsychiatric Status Rating ScalesSupranuclear Palsy, ProgressiveKidney Diseases, CysticDynorphinsPhenotypeAlzheimer DiseaseDiprenorphineSchizophrenic PsychologyEnkephalin, D-Penicillamine (2,5)-Chernobyl Nuclear AccidentEndorphinsCerebellar DiseasesParkinson DiseaseEctodermal DysplasiaHydromorphoneDepressive Disorder, MajorAntipsychotic AgentsStreet DrugsDose-Response Relationship, DrugCocaine-Related DisordersDrug ToleranceComorbidityEnkephalin, LeucineAttention Deficit Disorder with HyperactivityDextropropoxypheneSubstance Abuse, IntravenousDisease Models, AnimalCognition DisordersDepressive DisorderTime FactorsRisk FactorsSynucleinsAnalgesicsEnkephalin, Leucine-2-AlanineOpiumLewy BodiesPrevalencePain MeasurementFentanylDrug InteractionsStress Disorders, Post-TraumaticAnalysis of VarianceAlcoholismPregnancyPedigreeDementiaStereoisomerismInfant, Newborn