hi, i am new here, i want to say to cant stop crying, i wish i had parents like you back when i was a kid. It shows your son you care and your in charge still even though he is 18 but that doesnt make him adult in his head. drugs really mess up our brain , so our thinking is reaaly screwed up. I hope this rehab center he is in shows by pic. and tells him what the drugs do to his body and brain . i have been told not all drug rehab places do that which i find very distrupting. stay strong go to meetings and learn all you can on drug use, just doing that hopefully will show him you do care and not just trying to be controling even if he doesnt say it or act that way.