Attention Deficit Disorder has been called many things over the years. Now, it's all ADHD, or attention deficit hyperactivity disorder. It comes in three forms, ADHD-inattentive, ADHD-hyperactive, and ADHD-combined (with both inattention and hyperactivity). To make it more complicated, ADHD inattentive is much more than problems with attention and concentration. It really involves one or more problems with the executive functions (attention, concentration, organization, working memory [which is the human equivalent of RAM memory on a computer], sustained effort, the ability to get started on important but less interesting tasks, and the ability to monitor one's work output for careless mistakes).
Executive function problems can be caused by a number of things such as ADHD, anxiety, depression, bipolar disorder, learning / processing deficits, motivational problems and even some psychotic disorders. This is why a good, comprehensive evaluation is so important. In the Chicago area, consider seeing one of our providers well versed in the assessment of executive function problems. We're at Heritage Professional Associates. Outside of the Chicago area, ask someone whom you trust for the name of a reputable mental health care provider.