data-ad-client="ca-pub-1763189992875486"> </amp-auto-ads> <amp-auto-ads type="adsens Is biting your nails a mental disorder? The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, categorizes chronic nail biting as other specified obsessive-compulsive disorder (OCD) , classified in the same group as compulsive lip biting, nose picking, and hair pulling (American Psychiatric Association, 2013). <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1763189992875486" crossorigin="anonymous"></script> What does nail biting indicate? Nail biting explained Anxiety: Nail biting can be a sign of anxiety or stress . The repetitive behavior seems to help some people cope with challenging emotions. Boredom: Behaviors such as nail biting and hair twirling are more common when you're bored, hungry, or need to keep your hands busy. What causes obsessive nail bitin