Nail fungus is a common infection that can make the nails brittle and discolored. It starts by yellowing or whitening of the toenails or fingernails. Even when nail fungus affects one nail, it can quickly spread to the rest of the nails on the feet or hands. Fungal nail infections don’t generally cause much discomfort when mild, but they are contagious. DaVida Medical & Aesthetics is proud to offer nail fungus removal to patients in San Antonio and surrounding areas of Texas.