Ключевые слова: addiction, anxiety, anxious, bad, bite, biting, burr, caucasian, cuticles, discomfort, embarrassed, expression, face, fear, female, finger, girl, habit, hand, hurt, hygiene, injury, manners, mouth, nail, nervous, neurotic, nibble, pensive, people, picked, pressure, problem, sad, scared, stress, teeth, tension, thumb, tore, trouble, ugly, woman, worried, worry, wound,