History of the Documentation of Down Syndrome and Autism

This article presents a historical overview of the documentation of Down syndrome and autism, organized by country, period, and mode of documentation. The study traces early visual and cultural records in European art prior to modern medicine, followed by the emergence of clinical and biological explanations in the nineteenth and twentieth centuries. The analysis demonstrates that Down syndrome was primarily documented through observable physical characteristics, while autism was identified through detailed behavioral observation. In Asian contexts, documentation emerged later and was strongly influenced by family structures, cultural norms, educational systems and state policies, resulting in many individuals remaining undocumented. The article proposes a historical and sociocultural framework for understanding how human differences have been recorded, emphasizing diversity and contextual interpretation rather than fixed diagnostic classification.