Nails next to the skin hard for many reasons: 1, long-term physical labor crowd long-term contact with irritating substances, skin long-term friction, resulting in local skin thickening and the formation of this situation, no treatment has no effect on the body, pay attention to skin care, soak your hands in warm water for ten minutes, wipe the cod liver oil to make the local skin softening. The actual skin care of the hand, every time you wash your hands after rubbing the hand cream, or wear gloves when you work, to reduce the stimulation of the skin, you can make the symptoms reduce. 2, in addition to the skin hard pressure pain, sometimes stimulation will bleed consider common warts, you need to go to the hospital dermatology department to confirm the diagnosis, after the diagnosis of the laser or frozen common warts will be removed can be improved. 3, the lack of micronutrients or vitamins, resulting in the keratinization of the skin can be seen. This kind of situation, usually eat more carrots, broccoli, animal liver, etc., to supplement the body’s vitamin needs, can make the symptoms reduce or disappear.