SUBSTANCE USE 101

Signs and Symptoms of Addiction

Addiction can happen at any age, but it usually starts when a person is young. Teens who continue to use drugs despite harmful consequences could be addicted.

When adolescents start behaving differently for no apparent reason—such as acting withdrawn, frequently tired or depressed, or hostile—it could be a sign they are developing a drug-related problem. Parents and others may overlook such signs, believing them to be a normal part of puberty. Other signs include:

  • a change in peer group

  • carelessness with grooming

  • decline in academic performance

  • missing classes or skipping school

  • loss of interest in favorite activities

  • trouble in school or with the law

  • changes in eating or sleeping habits

  • deteriorating relationships with family members and friends15

For teens seeking help for substance use, or for parents, teachers and other trusted, caring adults seeking to help a teen they know is struggling with substance use, visit our Resource page or the SAMHSA National Helpline website for their free, confidential, treatment referral and information services line.