ADHD is often comorbid with other psychiatric/neurodevelopmental disorders, and is associated with developmental coordination disorder (DCD) in about half of all cases. Therefore, clinicians who are working with patients with ADHD need to be aware of the very strong association with motor impairment and should be able to diagnose motor control problems. There are evidence-based interventions for DCD, which makes it important for clinicians to be able to provide adequate assessment and early diagnosis. Several well-researched screening instruments are available, in particular the test of motor impairment, the movement assessment battery for children, and the screening devices designed by a Swedish group.