The difference between ADHD and autism

Autistic children are often attention is not focused, activity, movement monotonous weird symptoms, often mistaken for ADHD, in fact, by comparison, is not difficult to identify:
(1) the incidence of autism is far below the ADHD, only 2-3 children per thousand children suffer from autism, and more men than women, symptoms appear earlier;
(2) from small and parents no close performance, lack emotion exchanges, like alone, does not gregarious, speech less, on non-biological of things (toys, books,) has special attachment; language dull, and does not Qing even does not talk, action stereotypes bizarre or repeatedly action (mouth nasal TIC, shrugs, bite finger, and sleeve,), on outside stimulation numb, does not listen to persuaded, go its own way, these features and more dynamic syndrome has larger difference;
(3) significantly lower intelligence in children with autism, some could not even carry out psychological testing, and normal intelligence in children with ADHD are completely different, of course, they in some way (such as count, sing, paint, etc) also have special skills;
(4) selection of ADHD Drugs on the treatment of ADHD have significant effect, but is not valid for autism, it can also identify autism;
(5) autism developed serious mental disorders, like schizophrenia, without fear of danger, laughing or crying, temper, but ADHD children from the developed to the extent of schizophrenia.