welcome to HealthcareMagicTwenty-nail dystrophy also called Sandpapered nails is characterized by the rough accentuated linear ridges developed on all of the twenty nails of the fingers and toes may become opalescent, thin, dull, fragile.It can be a manifestation of lichen planus, psoriasis, alopecia areata, vitamin A deficiency
, atopic dermatitis
, and ichthyosis vulgaris
.For treatment of the condition you need to get treated for the condition causing it so you can consult a Dermatologist
for opinion and treatment.