Despite extensive investigation, how autism occurs is not well understood. Its mechanism can be divided into two areas: the<unk>  of brain structures and processes associated with autism, and the neuropsychological linkages between brain structures and behaviors. The behaviors appear to have multiple<unk> es.
Autism pathophysiology
Asperger syndrome pathophysiology
Mental retardation pathophysiology
Attention-deficit hyperactivity disorder pathophysiology
Conditions comorbid to autism spectrum disorders
Causes of autism
Fragile X syndrome pathophysiology
Autism diagnostic criteria