What is nail fungus? Toenail fungus is an ailment where a fungus gets under the toenail and infects the skin. Symptoms of toenail fungus include a thicker or warped toenail, crumbling around the edge of the nail, a discoloring of the nail and its bed, white spots may appear, and even pain. While it is likely that multiple toes will be infected it is uncommon, but possible, for all of them to be infected. Handling a nail fungus is tricky because while unpleasant it does not often pose very many severe health risks. However doing nothing could allow it to spread potentially even to the fingers.  Read more