Checking for:

  • 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.