Sally sits in the classroom biting her nails anticipating the pop quiz she failed to study for, and like most kids, it is an anxiety response. According to WebMD, “âÂ?¦. 60% of children and 45% of teenagers bite their nails,” and contributing factors include boredom, stress, frustration and loneliness. Though most people who bite their … Continue reading Is Nail Biting a Sign of Mental Illness?