Nail barbs are mostly considered to be related to environmental dryness, washing habits, lack of vitamins and other factors. 1. Dry skin: in the fall and winter seasons, the environment is more dry, especially in the northern region, hand skin dehydration will have barbs and so on. 2. Washing habits: for people who always use soap and other alkaline products to wash their hands or use detergents that are too strong to clean dishes and don’t wear gloves, due to the local oils on the hands being over-cleaned, the lack of nourishment for the local skin will cause pimples. 3. Lack of vitamins: For people who are picky eaters, partial eaters, and do not like to eat vegetables, the intake of vitamins, such as vitamin B group is insufficient, so it will lead to the emergence of fingernails with barbed nails and other symptoms of dry skin. For patients with nail barbs, you can usually apply hand cream to moisturize the local skin, but also pay attention not to over-wash the local skin, if the symptoms continue to be unrelieved, it is recommended that patients go to a regular hospital, clear cause of the active treatment.