Nail fungus, or onychomycosis, is a fungal infection that affects the nails, often caused by dermatophytes, yeast, or molds. It typically results in thickened, discolored, brittle, and sometimes crumbly nails. Toenails are most commonly affected, and the infection can spread if left untreated.
To avoid nail fungus, keep your nails clean and dry, as fungi thrive in moist environments. Wear breathable shoes and socks, and avoid walking barefoot in public places like pools or locker rooms. Trim nails regularly and avoid cutting them too short. If you have a fungal infection, treat it promptly with a professional to prevent it from spreading. Additionally, avoid sharing nail tools or footwear.