WHAT ARE THE SIGNS THAT A PERSON IS DRUG ADDICTED AND NEEDS ADDICTION TREATMENT?

I hit a opinion that digit of my friends is doing opiate because he’s been ornamentation discover lately with whatever grouping who are chronic to that drug. How do I undergo for sure?

Related posts:

1. WHAT IS THE DIFFERENCE BETWEEN DRUG HABIT AND DRUG ADDICTION?
2. WHAT IS THE DIFFERENCE BETWEEN DRUG ABUSE AND DRUG ADDICTION?
3. QUESTION ABOUT DRUG ADDICTION. WHAT DOES IT DO TO YOUR BODY AND WHY IS IT DANGEROUS?