Define mental disorder. But stress related? Absolutely it is. Nail biting is categorized as a Body Focused Repetitive Behaviours (BFRBs). It can range from merely a cosmetic nuisance to fairly distressing. Most turn to nail biting because at some point it was comforting.
Babies suck on their fingers as it makes them feel secure to have something in their mouth. Rats do something similar to distract them from anxiety. You are nor a baby or a rat (I hope!) so let’s STOP TODAY!
As a result understanding the reasons your unconscious wired nail biting as a stress response can release it and be replaced by a behaviour you actually want. Get in touch today to find out how.