Introduction -- Epidemiology -- Providing a rationale for change in treatment approach -- Explaining dual disorders: Neurobiological and genetic factors -- Psychological factors -- Social and economic factors -- Schizophrenia and addiction -- Mood disorders and addiction -- Personality disorders and addiction -- Anxiety disorders and addiction -- Developmental disorders and addiction: ADHD and Autism -- Triple Diagnosis: Mental handicap, addiction and behavioral disorders -- Non-pharmacological addictions and psychiatry: Gambling, Internet, sex, and gaming -- Diagnostic tips and tricks in dual disorders -- Psychosocial interventions in DD treatment -- Pharmacotherapy and dual disorders -- Cigarette smoking and psychiatry -- Forensic perspective -- Adolescent populations -- Gender issues and pregnancy -- Somatic problems and DD patients -- Dual Disorders, a sequel of the DSM paradigm? -- Towards a new model of care: integrating mental health, substance use and somatic care.