Fungal toenails, also known as onychomycosis, can be incredibly common and difficult to treat. It occurs when fungus finds its way into the nail bed or underneath the nail plate via tiny cracks in the skin. This condition often causes discoloration of the nails, making them look yellowish-brown with thickened edges, and can cause the nails to feel rough and be difficult to cut. Our blog posts offer a range of helpful information about fungal nails, including expert advice on recognizing and treating the infection.