Recurrent drug use that results in a lack of meeting important obligations at work, school, or home.
Recurrent legal problems as a result to the drug.
Larger amounts of the drug are taken or for longer then intended.
The individual experiences a persistent desire to take the drug or has unsuccessful attempts to decrease or control the use of the drug.
Tolerance is either a markedly decreased effect of the drug or a need to increase the amount of the drug used in order to achieve the same high or other desired effects.
Continued drug use despite continued or repeated social or relationship problems as a result of the drugs effects.…