data-ad-client="ca-pub-1763189992875486"> </amp-auto-ads> <amp-auto-ads type="adsens <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1763189992875486" crossorigin="anonymous"></script> Doctors classify chronic nail biting as a type of obsessive-compulsive disorder since the person has difficulty stopping . People often want to stop and make multiple attempts to quit without success. People with onychophagia cannot stop the behavior on their own, so it's not effective to tell a loved one to stop. In some cases, nail biting can be caused by an underlying mental health condition. For example, chronic nail biting may be a sign of obsessive-compulsive disorder (OCD) . OCD causes you to use repetitive, compulsive behaviors to ease the anxiety caused by obsessive, intrusive thoughts.
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