Some people bite their nails unnecessarily for a variety of reasons, including:
Nail biting may be associated with mental health concerns such as ADHD or trichotillomania.
Repetitive behaviours act as a brief stress and anxiety coping technique, providing momentary relief and soothing feelings during stressful situations
For people who prefer sensory input, biting their nails can be a gratifying tactile experience, stimulating the nerves in their fingertips.
Nail biting gives sensory stimulation and fills boredom, frequently becoming a habitual habit from childhood and imprinted in one's routine.
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