ADHD or attention deficit hyperactivity disorder is a medical condition or disorder. ADHD patients or child have different brain development than ability of which affect the brain in various functions performance such as siting still, attentions and ability of retaining the information.
Brains brain activity is less as he is not able to wait still for his turn in games and interrupting the teacher during class and forgetting his home work.
Well, stealing is illegal and could get you in jail or at the least get you fined. Stealing is not good and could get you into bigger trouble in the future kind of like an addiction. It's better to just BUY the candy bar instead of paying much more for it. It's just a candy bar man. Just buy it.