Nail biting is a common habit, but usually not a serious one for most children. Most children who bite their nails eventually lose the habit, but some may continue well into adulthood. In more serious situations, nail biting can lead to health concerns. There is no prescription to stop nail biting, but it can be addressed. Dr. Cindy Gellner talks about the reasons why nail biting occurs and offers suggestions on how to help your child stop biting her nails.