s an automatic, habit response by now, very likely a tension-reduction knee-jerk response. If your son does display ADHD
, the behavior you are noticing would not be associated with the ADHD
. Might it be a tic - i.e., an involuntary muscle response? It is possible. Here are two bits of guidance. First, request an evaluation by a pediatric neurologist. Second, re: the ADHD, if he is excelling in school you needn't do anything.