Determining if a young person is using mind-altering chemicals is not easy because many
of the feelings and behaviors can be displayed by a normal, healthy adolescent. On the
other hand, many of the indicators of substance abuse can also signify a serious emotional
problem or even mental illness. The following is a list of readily observable indicators
that can signify adolescent substance abuse. 
Deterioration of school performance 
  - poor grades 
- absenteeism 
- skipping classes 
- disciplinary problems 
 
 
Loss of interest in school or extracurricular activities 
  - clubs 
- sports 
- job 
- hobbies 
- other activities such as yearbook, newspaper, band, drama, cheerleading 
 
 
Change in peer relationships 
  - change in peer circle; now affiliates more with suspected drug and alcohol users or
    "troublemaker" 
- has fewer friends; now seen alone more often 
- isolated 
 
 
Physical appearance - dress and self-care 
  - deterioration in self-care habits, grooming, dress 
- wears clothing, jewelry, and insignias that suggest or advocate drug or alcohol use 
 
 
Physical appearance - behavioral 
  - drowsiness 
- appears intoxicated 
- unsteady gait 
- slurred speech 
- incoherent 
- hyperactive 
- agitated 
- red, glazed eyes 
- dream-like trance 
- hostile 
- abusive 
 
 
Fluctuation in feelings 
  - pronounced mood changes 
- excitable 
- nervousness 
- paranoia 
- panic 
- depression 
- anger 
- euphoria, elation 
- inappropriate laughter 
- withdrawn 
- pronounced low self-concept 
 
 
Deterioration of thinking 
  - poor concentration 
- poor memory 
- short attention span 
- confusion 
- bizarre thoughts 
- hallucinations 
 
 
Deterioration of motivation 
  - loss of motivation 
- diminished enthusiasm 
- loss of initiative 
- giving up goals/ambitions 
 
 