Mkuu, there is so many ways this can be explained.
From Freud's point of view, it can be a sympton of Oral Fixation...Freud believed that nail biting, like everything else in life, is related to sex.
He believed it was just another characteristic of people with an oral fixation, or the constant desire to put things in our mouths as a form of stimulation.
According to Freud, all babies go through this stage. If they arent treated properly, they never move past this dependency and develop oral fixations.
Overeating, smoking, chewing on pens, and even seemingly unrelated behaviors like alcoholism and sarcasm are also listed as oral fixation indicators.
However, on the other side, Stress and medical issues are listed as potential causes, as are low self-esteem, emotional disorders, and family history.
Kuna wanaoamini kwamba genetics play a role in nail biting, as it tends to run in families.
Wengine wana argue kwamba nail biting ni a learned behavior, which would also explain the familial link.
Kama mtoto akimwona mzazi anakula kucha zake wakati wa stress ama inactivity, she or he might try it out and derive pleasure from the action, thus sparking a habit.
Kabla ya kupata ushauri, nadhani ni vyema uka disclose umri wako. hilo litasaidia zaidi kujuwa ni kwa namna gani utapata msaada kama unauhitaji.