Attention Deficit Hyperactivity Disorder (ADHD) is a long name for problems in kids. If you or a friend has ADHD you may notice certain symptoms. Usually kids with ADHD cannot sit still, fidget, and bounce their legs and arms. In addition, kids have problems paying attention, especially at school. Kids may dream or let their minds wander. It is hard for kids with ADHD to focus on one thing at a time. They may walk around during class or get out of their chairs frequently. There are medications that help kids focus better. Also, there are therapies available to help as well.