- Sudden change in behavior
- Family isolation
- Irritability for no apparent reason
- Change in sleeping habits , food , hygiene and clothing
- Break school / professional income
- Changing the emotional state ( mood , euphoria , depression , insomnia , etc.)
However have the utmost care not to label your child , husband, wife, student or employee as they may present some symptoms mentioned above and not drug users . The best way to be certain is asking for professional help to experts.