Add Yahoo as a preferred source to see more of our stories on Google. Tension and stress are often the triggers for nail-biting, says paediatrician Monika Niehaus. Jens Schierenbeck/dpa Many children ...

If your child is a frequent nail-biter, it’s easy to jump to the conclusion that something may be amiss emotionally, or they’re the only kid with this annoying habit. But neither is (necessarily) true ...