[Update in diagnosis and early intervention of Autistic Spectrum Disorder]

Autism Spectrum Disorder (ASD) is a neurodevelopmental condition that affects the social commu nication and behavior areas. Its symptomatology display heterogeneity and a wide range of functio nality levels in each child. In the last decade, significant advances have been made in the early detec tion of risk signs, favoring early diagnosis. This has allowed access to interventions that capitalize neuroplasticity of this stage of development, raising the possibility of mitigating the full manifesta tion of the disorder. The objective of this update is to review early diagnostic tools and early inter vention models and to analyze how to implement evidence-based interventions in a health context in a country like Chile.