The signs of drug abuse and dependence depend on the drug and the person
using the drug. Behaviors that may be signs of a drug problem include:
Changes in sleeping or eating habits, less
attention to dressing and grooming, or less interest in sex.
and down moods, a mood or attitude that is getting worse, or not caring about
Anger toward others or treating others
Sneaky behavior, lying, or stealing.
relationships, or relationships that are getting worse.
problems at work or school, or problems with the law.
friends and activities, finding new friends, and not wanting old friends to
Having these signs doesn't always mean a person is using
drugs. The behavior could be because of work or school stress, or it could be a
depression or another medical problem. But behavior
changes like these are common in people who abuse drugs.
signs of drug abuse and dependence include:
Red eyes, a sore throat, a dry cough, and
Needle marks on the arm or other area of the
Small, "pinpoint" pupils in the eyes.
weight without trying to, or not feeling like eating.
Changes in sleep behavior, such as not sleeping as well.
This information is produced and provided by the National
Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National
Institute via the Internet web site at http://
.gov or call 1-800-4-CANCER.
WebMD Medical Reference from Healthwise
March 12, 2014
This information is not intended to replace the advice of a doctor.
Healthwise disclaims any liability for the decisions you make based on this