BuprenorphineAnalgesics, OpioidReceptors, Opioid, muOpioid-Related DisordersNarcotic AntagonistsReceptors, OpioidReceptors, Opioid, deltaReceptors, Opioid, kappaOpiate Substitution TreatmentNaloxoneNarcoticsOpioid PeptidesMethadoneMorphinansAdministration, SublingualNaltrexoneHeroin DependenceNoonan SyndromeMental DisordersLEOPARD SyndromeMorphineStress Disorders, TraumaticParasomniasBipolar DisorderMasturbationSchizophreniaMethadyl AcetateSubstance Withdrawal SyndromeHeroinDiagnostic and Statistical Manual of Mental DisordersNeonatal Abstinence SyndromeEnvironmental RemediationStress Disorders, Traumatic, AcutePsychotic DisordersMood DisordersSyndromeObsessive-Compulsive DisorderAnxiety DisordersBrainAnalgesicsEnkephalin, Ala(2)-MePhe(4)-Gly(5)-EnkephalinsSocieties, NursingMarfan SyndromeAutistic DisorderPachyonychia Congenitaalpha-SynucleinSubstance-Related DisordersDiprenorphineFrasier SyndromeLevorphanolAbnormalities, MultipleHydromorphonePain MeasurementPainPrescription Drug MisuseDose-Response Relationship, DrugMutationOpiate AlkaloidsAnalgesiaSupranuclear Palsy, ProgressiveKidney Diseases, CysticFentanylSubstance Abuse DetectionPhenotypePsychiatric Status Rating ScalesAlzheimer DiseaseNalbuphineSchizophrenic PsychologyEnkephalin, D-Penicillamine (2,5)-Chernobyl Nuclear AccidentEndorphinsCerebellar DiseasesDynorphinsParkinson DiseaseEctodermal Dysplasiabeta-EndorphinDepressive Disorder, MajorAntipsychotic AgentsButorphanolDisease Models, AnimalDrug ToleranceSubstance Abuse Treatment CentersComorbidityDrug InteractionsThiazinesEnkephalin, LeucineAttention Deficit Disorder with HyperactivityTime FactorsDepressive DisorderPrescription Drug DiversionStreet DrugsCyclazocineCognition DisordersSynucleinsDrug and Narcotic ControlTramadolEnkephalin, Leucine-2-AlanineEthylketocyclazocineChronic Pain