The presence of certain symptoms of using some substance does not means that the child is using any abusive drugs. Some of the symptoms or behaviors can be the result of adolescent stress, depression, or because of any other teenager problems. The symptoms should be taken seriously disregard of any reason and should be treated for the well-being of their child. The important point to find out the symptoms is to watch any significant changes in the child’s personality, appearance, behavior, and attitude.

Some of the common physical signs of drug use includes staggering or slow walk, feeling difficult to sleep, loss of appetite, very poor physical coordination, feeling lazy all the time, changes in eating habit, increased appetite, waking up at unusual times, unusual weight gain or loss, puffy face, watery or red eyes, blank stare, shaking hands, pupils unusually becoming larger or smaller, cold, paleness, sweaty palms, blushing, smell of the drugs in clothes or breath or body, nausea, tremors, talking excessively, being hyperactive, shaking head or feet, vomiting, needle marks on leg or arm, running nose, irregular heartbeat, hacking cough, and excessive sweating.

Other than the above physical symptoms, there are also many common behavioral signs such as changes in hobbies or activities, changing moods violently, lack of motivation, changes in total personality or attitude, changes in friends or new hangouts, avoiding old friends, sudden drop in the studies and grades or even at work, nervousness, always looking for privacy, stealing money, giddiness, lack of energy and self-esteem, changes in habits, forgetfulness, difficulty in concentrating, temper tantrums, being oversensitive, secretive behavior, and irritability.