Although this is a disease that affects many adults, it is most comon in school children. People with ADD have trouble sorting out information, thus special classes are required to go at a slower pase. A lot of cases are helped with medication, however that is not always the answer.
Some children grow out of ADD once they get past their teens.
Other continue to have it on into adulthood. Attention deficit disorder is often misdiagnosed because so many of the symptoms are related to child development. Children can be normal at one age and then not at another, but telling the difference between what is normal and what is not is the tricky part. Some of the most common symptoms include habitual faliure to pay attension, which leads to difficulty with school work. However excessive it may be, though, is what needs to be monitored.