Take a quick look at your toenails. If they're thick, yellowed or flaky, you might be among the 50 percent of Americans who have toenail fungus but don't realize it. A fungal nail infection is caused ...

Add Yahoo as a preferred source to see more of our stories on Google. If your favorite sandals are sitting in the closet because of unsightly thick and yellow nails, you might be wondering how to know ...

Thick, yellow, and brittle toenails are often caused by a fungal infection known as onychomycosis. This occurs when yeasts, moulds, or dermatophytes enter small cracks in the nail or surrounding skin, ...