is a state of periodic or chronic intoxication produced by the repeated consumption of a drug (natural or synthetic). Its characteristics include: (i) an overpowering desire or need (compulsion) to continue taking the drug and to obtain it by any means; (ii) a tendency to increase the dose; (iii) a psychic (psychological) and generally a physical dependence on the effects of the drug; and (iv) detrimental effects on the individual and on society.
Alcohol and drug addictions are typically diagnosed using the criteria for substance dependence. There are seven criteria for substance dependence. To be diagnosed, the person would have to have at least three of the criteria within the same year.