Here's the main thing you need to know about nail fungus: AVOID. Seriously, the best way to treat this stubborn condition is to prevent it in the first place. I've compiled a few suggestions on how to do just that, plus some treatment options if you wind up with an infection.
What it is: Nail fungus is an infection of the nail bed. It often begins as a white or yellow spot under the nail, then spreads to the entire nail. Full-blown fungus usually makes the nail thick, brittle, and yellowed, with crumbly edges to the nail. (You can see pictures if you like, but you've been warned: it ain't pretty.)
How it's transferred: Fungi thrive in warm, dark, damp places, then happily transfer to your toenails or fingernails.
How to avoid it: Never walk barefoot in a public place such as a shower or swimming pool; instead, wear flip-flops to protect your feet from potential fungus hangouts. If you've battled nail fungus before, wear shoes and socks that "breathe," rather than nylons or socks that trap moisture. Take your own tools to nail salons, and never use the Jacuzzi-type foot-soaking tubs — they're harder to sanitize, so you risk picking up someone else's fungus.
To find out how to treat nail fungus, read more