anything from repettively banging their head against a wall to hitting their head to pinching themselves. any idea why that happens as part of the autism spectrum? it may be very similar to a lot of the other repetitive behaviors that they have. autism. asd for awe stichl spectrum disorder is by definition a wide array of behaviors. mild or severe, the two core symptoms are social communication challenge, one third o nonverbal and second, restrictive or repetitive behaviors like rocking, flapping, even hitting. take a drirng snk. kara is aggressive, throwing things, breaking things, hitsing