Nail dystrophy can be divided into congenital nail dystrophy and acquired nail dystrophy. Congenital nail dystrophy is caused by autosomal dominant inheritance and there is no effective treatment. Acquired nail dystrophy is mostly related to other skin diseases, such as lichen planus, psoriasis, pemphigus, fungal infections, chronic eczema, etc., which can lead to nail dystrophy. It is recommended to actively treat the primary diseases mentioned above, as well as to avoid excessive contact with water, alkaline detergents and chemical agents that can cause nail damage and not to do nail art. You can also apply topical 10% urea cream twice a day around the nail and take vitamin AD pills and vitamin E orally to nourish the nails, usually for more than 3 months continuously.