Abuse and Addiction? Where is the line between the two and what is the difference? In terms of drug use, ‘abuse’ is the harmful or illegal use of non-medicinal use of drugs or alcohol. If we define addiction as a mental or physical dependence or drugs or alcohol we can see that the lines are often blurred. Many people feel Drug Rehab is only for those with an addiction. A comprehensive drug rehab will also address those with an abuse problem and in fact many people who feel they only have an abuse problem are in fact in the deadly grasp of addiction without realizing it. Drug abuse is always part of the addiction cycle. A quality rehab program is able to evaluate the underlying causes of substance abuse problems and help the abuser put workable solutions into place before their entire life crumbles around them. An effective rehab successfully helps the individual help themselves – no matter the stage of abuse or addiction.