People use alcohol and other substances or drugs for many reasons. When the consumption of alcohol, substances and/or drugs is inappropriate, there is a problem, i.e. repeated consumption to experience intoxication, cope with stress and/or to change or avoid their circumstances. Improper use may also be characterised by the use of prescription drugs contrary to what your doctor recommends. Addiction is when people can no longer control the urge to use substances or drugs despite the negative consequences of consumption.
An addiction illness is defined as chronic brain disease because alcohol and substances change the brain and how it functions and these changes can be long-lasting and lead to a lack of control and changes in motivation and temperament.