When we begin to wonder if a loved one has, or is developing, a chemical dependency, our first reaction may be to focus on the positives. “He’s still going to school.” “She’s still doing well in sports.” “He just got a promotion.” However, it’s in that person’s best interest if you are open to seeing the telltale signs of drug addiction. They include:
Secrecy and lying
When a generally open and honest person starts spending more time in private and lying about their activities, especially when questioned about them, there is cause for concern. Drug dependency isn’t the only thing that can cause these behavioral changes, of course, but it definitely can cause them.
http://www.newdawntreatmentcenters.com/blog/sacramento-detox-center-shares-5-signs-your-loved-one-needs-help/