Defining addiction according to behavioral symptoms appears to offer the most reliable means of accurately diagnosing addiction.
In layman’s terms, "If it looks like a duck, acts like a duck, walks like a duck, and quacks like a duck, it’s probably a duck."
Very simply put, if an individual is having problems associated with his/her substance use, and really tries but fails to control his/her use, then the chances are pretty good that there’s an addiction lurking nearby !
Quack - Quack