Nail biting, also known as onychophagia, can have several causes. It's a common habit among children and can mean different things, from simple boredom to anxiety or stress. Anxiety or Stress: Kids ...

Nail-biting–You’ll notice it in the car seat line, during story time, and at soccer. Tiny fingers drift to tiny teeth. Maybe they chew until the nails are ragged. Maybe they pick at the side-skin ...