Relax: Nobody has any definitive answer to cause or cure of this. It may be a type of compulsive behavior so possibly OCD therapies can be considered. Some people put bad-tasting agents or thick lacquer on their nails. Clip your nails very short. Do not waste much emotional energy on this. Lots of people bite their finger nails and even toenails. They stop when they lose their teeth or without knowing.
Answered 4/10/2015
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