Having concurrent substance use and mental health problems obviously affects the person experiencing the problems directly, but they also have powerful effects on family members and friends. Families need help to deal with the impact of concurrent disorders, but families are also a key to finding effective solutions. Part I is an overview of concurrent disorders, an introduction to treatment options and information about substance use problems, mental health problems and how they interact. Part II focuses on the impact of concurrent disorders on family life. It includes information on...