The diagnosis of addiction is often made using the DSM-IV criteria for drug dependence, which requires three or more of the following symptoms to occur within the same 12-month period:
A need for markedly increased amounts of the substance to achieve intoxication or desired effect. Markedly diminished effect with continued use of the same amount of substance
The characteristic withdrawal syndrome for the substance. The same (or a closely related) substance is taken to relieve or avoid withdrawal symptoms
3. The substance is often taken in larger amounts or over a longer period than was intended.
4. There is a persistent desire or unsuccessful efforts to cut down or control substance use.
5. A great deal of time is spent in activities to obtain the substance, use the substance, or recover from its effects.
6. Important social, occupational or recreational activities are given up or reduced because of substance use.
7. The substance use is continued despite knowledge of having a persistent or recurrent physical or psychological problem that is likely to have been caused or exacerbated by the substance (e.g., continued drinking despite recognition that an ulcer was made worse by alcohol consumption).