Thick yellow toenails are usually caused by a fungal infection called onychomycosis. This can be irritating or painful. It’s less common, but the infection can affect your fingernails as well. Thick ...

Yellow toenails should never be ignored. They're most often caused by a fungal infection that's contagious and hard to eliminate without proper treatment. You can also develop yellow toenails as a ...

It's time to stop ignoring your toes. “Healthy nails have a plump, pink nail bed and pink nail plate with strong but thin nails,” says Dr. Dana Canuso, podatric surgeon and founder of Dr. Canuso ...

Fungal nail infections are common and are caused by fungi that live in the environment. They enter through small cracks in your nail or the nearby skin, causing infection. Fungal infections can affect ...

Onychomycosis is a yellowing of the toenails that often is caused by a fungal infection. Up to 18 percent of the population has this disease at any given time and it tends to get more common with age.

Thick, yellow toenails left so long they split and crumble. Nails so misshapen they dig into the skin, causing infections. Or, in the most severe cases, curling into what we call ‘ram’s horns’ that ...