I think someone I know is using drugs. What should I be looking for?

Signs of substance abuse can include physical symptoms such as inability to sleep, loss of appetite, hyperactivity and behavioral changes such as an increase in aggression, changes in attitude/personality, depression, and drop in grades.  Please see the following websites for an in depth look at signs and symptoms:

www.Phoenixhouse.org

www.drugabuse.com

www.drugfree.org

www.drugabuse.gov/