People are often perplexed and fascinated by the diagnostic process. In this article, we provided a basic description of this process. We reviewed the signs and symptoms of addictive disorders called Substance-Related and Addictive Disorders. We also reviewed several activity addictions. Finally, we discussed other psychiatric conditions that commonly occur together with addiction. Although a diagnostic label may tell us something useful about the past and present, it provides very little guidance about the future. A diagnosis cannot predict how the recovery process will unfold. The next section addresses these issues.