Alcoholism and drug dependence and addiction, known as substance use disorders, are complex problems. People with these disorders once were thought to have a character defect or moral weakness; some people mistakenly still believe that. However, most scientists and medical researchers now consider dependence on alcohol or drugs to be a long-term illness, like asthma, hypertension (high blood pressure), or diabetes. Most people who drink alcohol drink very little, and many people can stop taking drugs without a struggle. However, some people develop a substance use disorder-use of alcohol or drugs that is compulsive or dangerous (or both). This booklet is for you, the family member of a person dependent on alcohol or drugs. Whether your family member is dependent on alcohol, cocaine, heroin, marijuana, prescription medications, or other drugs, his or her dependence affects you and your family, too. This booklet answers questions often asked by families of people entering treatment. The "Resources" section, at the back of this booklet, lists a selection of sources for more information and support groups available to you during this stressful time. Take advantage of this help, ask treatment providers questions, and talk with supportive friends or other family members about your feelings. Millions of Americans abuse or are dependent on alcohol or drugs. All of these people have families-so remember, you are not alone. The fact that your family member is in treatment is a good sign and a big step in the right direction. People with alcohol or drug dependence problems can and do recover.