25 November 2019 It’s 25 years since we redefined autism: Here’s what we’ve learnt View It’s 25 years since we redefined... This article discusses changes in our understanding of autism and the current evidence on the causes and treatments for autism. Related topics Physical health Social, emotional and mental wellbeing Support for children, young people and families Informative factsheets, articles, and videos Adults and families The child and family support sector