[Sixty years of autism]

The concept of autism has been broadened the last few years from 'early infantile autism' to 'an autistic spectrum'. Autism and related contact disorders are grouped together under 'pervasive developmental disorders' or 'autistic spectrum disorders'. The autistic disorder, Asperger's syndrome, pervasive developmental disorder not otherwise specified (PDD-NOS), Rett's disorder and the childhood disintegrative disorder all belong to this group. People with an autistic spectrum disorder have severe difficulties in the integration of perceived stimuli into a meaningful entity. More than two-thirds of the people with the autistic disorder (classical autism) are also mentally retarded. Although autism can still only be diagnosed at the behavioural level, there is considerable consensus regarding an underlying organic aetiology. Autism is clearly a multifactorial condition. Autism cannot be cured, but adequate intervention can significantly improve the quality of life of people with this disorder. Diagnosis and intervention are highly interrelated. In the intervention, a distinction is made between family-oriented and child-oriented strategies. Augmentative communication plays a key role in the treatment. People with autism need a lot of structure, clarity and predictability, also when they have become adults.