Nail disorders are rarely disabling or even painful. But they are a nuisance. One of the most common problems is toenail fungus (medical name onychomysosis)-about 15% of people have it, including nearly half of those over 70. It is estimated that three to five percent of the population suffer from nail fungus. Most often, nail fungus appears in the toenails. This is because socks and shoes keep the toenails dark, war, and moist. This is a perfect place for the fungus to grow. Individuals who experience complications with their health, particularly those that affect the immunity, can experience other serious health complications as a result of nail fungus. However, if an individual is generally healthy, it will not result in further complications. For most people, it is an embarrassing condition, so they hide their nail fungus under nail polish or shoes, but for your information, if you did this, nail fungus never recover by its own and untreated nail fungus, it can spread to other nails and lead to painful infection problem.