Nose-picking is mostly known as a "nervous habit" — a
category that includes thumb sucking, nail biting, hair twisting, and tooth grinding — nose picking
isn't necessarily a sign that your child is overly anxious. Kids usually pick their nose because it
has something in it that doesn't feel right.
Remedying dehydration or congestion
is the surest way to stop nose picking. Meanwhile, teaching your child to use a handkerchief or
tissue instead of his fingers may be the easiest way to deal with