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 ...

Toenail fungus, also known as onychomycosis, is a common condition that affects millions of people worldwide. This pesky infection can cause your nails to thicken, discolor, and even crumble, leading ...