Alcohol addiction and substance use disorders happen when an individual continues to take a substance, despite experiencing problems and/or consequences as a result. This can cause health problems or other issues at home, school, or work. Alcohol and other substance use disorders are progressive and can be fatal. Getting help as early as possible is strongly recommended. If you think you may have an alcohol or substance use disorder, see your doctor. Physicians often refer their patients to a specialist or recommend an inpatient treatment program to ensure a correct course of treatment is received.