"While each person abusing drugs may display different signs of using, there are some signs that are commonly seen. Some of the most common are unusual mood swings, poor memory, anxiety and hyperactivity. I always encourage counseling interns to trust their judgment. Especially as we get to know clients, it becomes easier to pick up on things that are not the 'norm' for that client. Further, I like to encourage interns to report any suspected slip or relapse to me right away, as it is best for the client's counselor to address these suspicions with the client."

Anyone who has worked with substance abuse for any length of time will likely tell you that addicts learn to hide or mask signs of substance use. Being able to learn skills that will help detect the use of illegal substances, or relapse, in a client is a vital skill of counselors. The interviewer wants to know that you are familiar with the most common signs and are able to tell someone new in this field what to look for.

"If I were to spend time with a counseling intern and try to educate him on signs of possible drug abuse, I would tell them that anything that seems 'out of character' for the client would be something to pay attention to. For instance, a client who is normally quiet and has a reserved personality, but who is suddenly easily agitated or aggressive would be an example. Also, if the client seems paranoid when he is normally not remarkably wary of others, these are a few signs to be aware of."