Why do people bite their nails?

Types of Nail Biting

One thing that is clear though is that nail biting is not a pathological condition in all times and in all people. However, it is not exactly clear where the border between healthy and unhealthy nail biting lies.In keeping with this perspective, many lay and scientific students of nail biting, there aren’t many of them to be honest, have observed that there are two types of nail biting.One type of nail biting is a passing phenomenon that occurs in childhood, and that will disappear on its own with time. Sometimes adults will also pass through short periods of nail biting.The second type of nail biting is nail biting that is thought to be a symptoms of a serious mental disorder. Careful scientific studies have found what are called several comorbidities that coexist with nail biting. All this means is that people who nail bite often have psychiatric problems at the same time.

Here is a list of the psychiatric disorders that one study found in groups of children who bite their nails along with the percentage of nail biting children who had each disorder: