Surface dents or ripples may signal shortages in zinc, calcium, or vitamin A, or point to skin disorders like psoriasis or eczema. Pitting often presents as small pinpoint depressions or shallow waves. Psoriasis commonly produces this pattern, and nail severity can parallel skin flare intensity. Alopecia areata and lichen planus may also cause similar texture shifts. Good trimming and gentle filing help, but lasting improvement depends on treating the underlying condition.
