Toenail Fungus Laser Treatment
The most common cause of brittle yellowing nails is fungal infection. More than 35 million Americans have fungal nail infections. Fungi are dermatophytes that feed on nail keratin. These organisms propagate in a warm, dark and moist environment. There is no better place for nail fungus to reside and infect toenails than in shoes. Infected nails have yellow or white spots. Nails will get thicker, further discolor and fracture, as the infection develops. Progressive infection of additional nails is also very common.