- loss of interest in family activities
- less social interaction with friends and not participating in activities at school
- drop in grades, skipping classes, falling asleep in class
- lying about whereabouts or activities
- finding evidence such as rolling papers, pipes, needles, empty bottles in the trash or in hiding places
- a change in friends (hanging out with a bad crowd)
- spending a lot of time alone or in their bedroom
- arguing and being defensive
- physical changes - weight loss or gain, loss of appetite, change in appearance - stealing or missing money, items, always needing money etc.
- Missing prescriptions from family or friends
- Smell of alcohol or smoke, heavy use of perfume,