Autism in Boys vs Girls: Understanding the Key Differences in Symptoms Usually, when we speak about Autism Spectrum Disorder (ASD) , we generally assume that symptoms manifest the same way in every child. However, the different manifestations of autism in boys and girls serve as one strong reason that many girls are diagnosed late or sometimes are not diagnosed at all. Understanding the Key Differences in Symptoms The research suggests boys are four times more likely to be diagnosed with autism than girls. This does not mean they are fewer; they are simply less visible. Common Symptoms of Autism in Boys: Greater visibility of social difficulties (e.g., poor eye contact, not responding to their names) Repetitive behavior, such as flapping hands, rocking, or lining up toys Delayed speech and communication Have behaviors that stand out and are, therefore, diagnosed at an earlier age Common Symptoms of Autism in Girls: More socially aware, often copying peers or mim...