My friend's son has been recently been diagnosed with ASD (Autism Spectrum Disorder).  We had thought it was ADHD (Attention Deficit Hyperactive Disorder) because some of his traits were remarkably like my daughters with ADHD. Clearly, we are not professionals which is why it should be left to the professionals to diagnose!  However, it did get me thinking about what Autism is and the differences between ADHD and Autism. ADHD is the most common coexisting condition in children with ASD. Some studies suggest a figure of approximately half of all ASD children having ADHD.  Equally, about a quarter of children with ADHD…