Answer:
Using causes difficulties in one's relationships
Engaging in secretive or suspicious behaviors
Frequently getting into legal trouble, including fights, accidents, illegal activities, and driving under the influence
Neglecting responsibilities at work, school, or home, including neglecting one's children
Sudden change in friends, favorite hangouts, and hobbies
Unexplained need for money or financial problems. May borrow or steal money.
Using drugs under dangerous conditions (driving while using drugs, using dirty needles, having unprotected sex)
Increased drug tolerance (the need to use more of the drug to experience the same effects one used to achieve with smaller amounts)
Misusing drugs to avoid or relieve withdrawal symptoms (nausea, restlessness, insomnia, depression, sweating, shaking, anxiety)
Loss of control over drug misuse (using more than intended, unable to stop)
Life revolves around drug use (always thinking of using, figuring how to get more, or recovering from use)
Abandoning enjoyable activities(hobbies, sports, and socializing) to use drugs
Continuing to use regardless of negative consequences (blackouts, infections, mood swings, depression, paranoia)