What Is Autism Regression? Autism spectrum disorder (ASD) is a condition that affects communication, behavior, and social skills. Some children show signs of autism from infancy, while others develop typically before losing skills. This is called regression. This sudden change can be alarming for parents. A child who once met milestones may start to: Why Does Autism Regression Happen? Research suggests several possible causes of autism regression, including: Some parents report noticing regression after certain illnesses, immune responses, or environmental exposures. If you have concerns about your child’s health history, consult a specialist to explore all potential factors. A Parent’s Experience with Regression Many parents feel overwhelmed when their child … [Read more...] about Autism Regression: What Parents Need to Know and How to Respond