While the following behaviors may indicate an alcohol or other drug problem, some also reflect normal teenage growing pains. Experts believe that a drinking problem is more likely if you notice several of these signs at the same time, if they occur suddenly, and if some of them are extreme in nature.

Mood changes: flare-ups of temper, irritability, and defensiveness.

School problems: poor attendance, low grades, and/or recent disciplinary action.

Rebelling against family rules.

Switching friends, along with a reluctance to have you get
to know the new friends.

A "nothing matters" attitude: sloppy appearance, a lack of involvement in former interests, and general low energy.

Finding alcohol in your child's room or backpack, or smelling alcohol on his or her breath.

Physical or mental problems: memory lapses, poor concentration, bloodshot eyes, lack of coordination, or slurred speech.