[How and why to diagnose autism?].

How and why to diagnose autism? The diagnosis of autism spectrum disorder can be made today before the age of 3 years. a consensus is emerging today that early care is fundamental to improving behavioral prognosis. In fact the determining neural plasticity in the first years of life of all children is the key argument of the search for early detection. Beyond the disorders highlighted, any concern of parents for development, especially that of language and social interaction, should be considered as a major warning sign and give rise to a thorough review of the development of the child by the doctor ensures his usual follow-up, within the framework of a consultation dedicated to the identification of a TSA. The child must quickly be referred to a second-line team trained in early diagnosis.