The growth of new nails in the lower layer of the nail may be caused by nail trauma, onychomycosis or nail malnutrition.
1. Nail trauma: If the nails are traumatized by external collision or extrusion, it may cause damage to the nail bed, resulting in the shedding of the old nails, and with the passage of time, the new nails will gradually grow, thus leading to the phenomenon of nail layering.
2. Ringworm of the nail: If there is a problem of ringworm of the nail, the skin fungus invades the nail, causing the deck thickening, shedding, turbidity and other problems, and in the old nails are not yet completely off, there may be a new nail growth, resulting in the lower layer of the nail to grow new nails.
3. Nail malnutrition: If an individual suffers from nail malnutrition due to heredity or prolonged exposure to irritants, it may cause the nails to become thinner, brittle, and easy to fall off, resulting in the growth of new nails under the nails.
If the phenomenon of growing new nails under the nails, it is recommended to go to the regular hospital in time, after clarifying the cause of the disease, targeted treatment under the guidance of the doctor.