A child with ADHD has three issues. He finds it difficult to stay focused or to pay attention to instructions while doing a task. He can also be extremely hyperactive. About 30-50 percent of children suffering from ADHD also suffer from learning disabilities because learning, memorizing, and recalling amounts to a mountainous task.
ADHD can actually be diagnosed with accuracy only by the age of 4 at the time the child begins schooling. While any child that is suffering from learning disabilities will also find it very difficult to listen, understand, interpret, and work according to instructions.
These kinds of children would have real-time issues in speech, writing, reading, and solving problems at school and work. The children are not dumb, nor are they imbecile who have an abnormally low IQ. They are also slightly different from some other children because their brains are wired a bit differently, and therefore they interpret things differently.