is drug addiction a sign of mental illness?

Question by onesickchick: is drug addiction a sign of mental illness?
i say yes but my friend says no. i think the self destructive nature of addiction is a sure indicator of mental illness.

Best answer:

Answer by araveugnitsuga
Maybe but remember that adiction isn”t easily controlled so the person may have been normal but pushed to it by group pressure. so depends of how the person was before. If he was easily controlled adiction controls him, if he was a correct person he may resist it and be saved

Answer by garyomega
Drug addiction IS a mental illness in and of itself.

Changes in Behavior May Be a Sign of Drug Use — Dr. Scott Teitelbaum discusses how changes in behavior can be a sign of drug use in adolescents.