There is a clear relationship between onychophagia (nail biting) , anxiety , and stress . Many people admit to biting their nails when they are nervous, under pressure, or experiencing prolonged worry. At those times, the act of biting their nails provides a brief sense of relief. It functions as a kind of immediate emotional release. The problem is that this relief is temporary. When repeated, the behavior becomes ingrained and can turn into an automatic response to any situation that causes internal discomfort.
Over time, what started as an occasional reaction can turn into a pattern that is difficult to control. Some people even say they only realize they are biting their nails when the damage is already done. This loss of control is one of the signs that the behavior is worth paying attention to.
Beyond the aesthetic aspect, onychophagia can have physical consequences. Constant nail biting can cause inflammation of the skin around the nail, can promote infections such as paronychia , can generate pain and disrupt normal nail growth. In some cases, deformities, recurring small wounds or light bleeding are observed. In addition, frequent contact between hands and mouth increases the risk of transmitting microorganisms, especially if there are open wounds.
Dental complications can also occur. Repeated pressure on the teeth can contribute to enamel wear or minor bite problems. While this doesn't always happen, it's something that health professionals consider when the habit persists.
So when does it stop being a minor problem? Experts suggest paying attention when the person tries to stop but can't, when frequent injuries occur, when there are repeated infections, or when the impulse increases in situations of intense anxiety . It is also relevant if the behavior becomes completely automatic and causes distress or shame.
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