Fungal Nail

Occurring when microscopic fungi enter through a break in the nail, a fungal infection can make your nails thick, discolored and brittle. If left untreated, the nail infection won't go away — and can be hard to treat. Thriving in warm, wet places, the fungi can be spread from person to person. Topical creams may help mild cases but antifungal pills are your best chance of curing a severe infection.