DrugFacts: Comorbidity: Addiction and Other Mental Disorders (10 mins)
Read each of the following sections: 'What Is Co-morbidity?', 'Is Drug Addiction a Mental Illness?', 'How Common Are Comorbid Drug Addiction and Other Mental Illnesses?', and the first 3 paragraphs of 'Why Do These Disorders Often Co-occur?'.
Click http://www.drugabuse.gov/publications/drugfacts/comorbidity-addiction-other-mental-disorders link to open resource.