While ADHD and Asperger's appear similar in children, one is a neurobiological disorder and the other falls in the class of Autistic Spectrum Disorders. See the key differences and treatment options of each in this simple infographic.
Checklist for ADD/ADHD in Boys - "Boys tend to be more hyperactive while girls like to daydream. This is because the structure of the male brain is different – not better, not worse, just unique. When it comes to boys and girls with learning disabilities, the variance in brain structure and processing will lead to different skill sets and symptoms. See blog entry, 'Do Boys Learn Differently from Girls? Learning Differences & ADHD.'