Signs of Drug Use in Teens: A Parent Guide

Recognizing Drug Use in Your Teen Could Save Their Life

Spotting signs of drug use in teens early makes a significant difference in outcomes. The National Institute on Drug Abuse reports that 15.1% of 12th graders used an illicit drug in the past month (2024 data). Adolescent brains are more vulnerable to addiction. Early identification gives you time to intervene before dependence sets in.

Red Flags to Watch For

• Sudden changes in friend groups
• Declining grades and lost interest in activities
• Requesting money without explanation
• Secretive behavior and locked phone/room
• Physical symptoms: dilated pupils, glassy eyes, weight changes

Physical Signs

Physical changes are often the first visible indicators:

• Bloodshot or glazed eyes
• Unusually large or small pupils
• Sudden weight loss or gain
• Changes in sleep patterns (sleeping too much or too little)
• Frequent sniffling, nosebleeds, or runny nose
• Unusual body odor or breath
• Tremors, shakiness, or poor coordination

Behavioral Signs

• Skipping school or work
• Loss of motivation
• Withdrawal from family activities
• Missing household items or money
• Paraphernalia: pipes, rolling papers, small bags, lighters
• Defensive reactions when asked about activities

“One conversation will not fix it, but one conversation starts the process. Approach with curiosity, not accusations. Ask open questions and listen.” – Partnership to End Addiction Parent Toolkit

What to Do If You Spot the Signs

Step 1: Observe Before Confronting

Document what you see over several days. Look for patterns rather than isolated incidents.

Step 2: Have a Calm Conversation

Choose a private, relaxed setting. Express concern without anger. Use “I” statements: “I noticed…” instead of “You always…”

Step 3: Get Professional Help

Contact your pediatrician for a substance use screening. Adolescent-specific therapy programs address the unique needs of teen substance use. A family therapist helps rebuild trust and communication.

Prevention Tips

Set clear expectations about substance use. Maintain open communication. Know your teen’s friends. Learn about early addiction signs so you respond at the first opportunity.