- The typical autism does not meet all diagnostic criteria of infantile autism and does not show until after the third year of life. As a subtype of autism but he is differential diagnosis for Asperger syndrome defined.
- The Asperger Syndrome (obsolete even autistic psychopathy and schizoid disorder of childhood), especially with a date of her age-appropriate language (according to the ICD-10 and DSM-IV criteria for a diagnosis – after a while Gillberg & Gillberg delayed language development a possible diagnostic criterion represents) and a correct from a formal point of view of language. People with Asperger syndrome are often clumsy motor.
To form the circle of pervasive developmental disorders according to classification of the diagnostic manuals ICD-10 are in addition to autistic disorder (in the strict sense) but also the
- Rett syndrome and Heller’s syndrome (disintegrative psychosis of childhood) that have similar symptoms, but differ in the course of autism. In Rett syndrome is now also a characteristic of this genetic alteration detected.