Understanding ADHD, Symptoms, Diagnosis, and Treatment What Is Hyperactivity and How Does It Relate to Autism? Hyperactivity refers to unusually high levels of movement, impulsivity, and difficulty maintaining focus or staying still. In children with Autism Spectrum Disorder (ASD), hyperactivity is a common concern and can make daily routines, learning, and social interactions challenging. While not all children with autism are hyperactive, research shows that symptoms of hyperactivity and attention [...]