Why do they do it? And how can you get them to stop? Tension and stress are often the triggers for nail-biting, says ...

“Onychophagia — or nail biting — generally does not cause permanent nail damage but shortens and thins them at the tips,” Stevenson told The Post. “Our nails grow from the ...

Nail-biting, also known as onychophagia, is a compulsive habit of biting the fingernails. In the United States alone, it's believed that up to 30% of individuals do it.