well, like i have said on other posts ..he is a very functioning addict and it was very difficult for me to tell when he was using....but his thinking is all off now...and whether that is the drugs, mental illness or a combo of both who knows and i guess that doesnt matter..what im most afraid of is the things he is telling them, more than how he is acting..because he can act pretty normal, but it is what comes out of his mouth that may be harmful to them. he also may have stopped using for now because he may be afraid that he may be drug tested...but i just dont know for sure.