Although treatment is usually sought for cosmetic reasons, nail fungus can be serious and should be treated. For example, if it is a severe infection, it can cause permanent damage to your nails. The infection can also spread beyond your nails, especially if you are in a high risk group, such as people with diabetes or impaired immune systems. High-risk people can develop cellulitis, a skin tissue infection, if toe fungus isn't treated.
Athlete’s foot infections can be mild or severe. Some clear up quickly, and others last a long time. Athlete’s foot infections generally respond well to antifungal treatment. However, sometimes fungal infections are difficult to eliminate. Long-term treatment with antifungal medications may be necessary to keep athlete’s foot infections from returning.
Use soap and water to wash your feet, and dry well, including between toes. Trim your toenails -- straight across -- to keep them shorter than the end of your toe. Make sure the tools you use are clean, too. Wash clippers and files with soap and water, then wipe with rubbing alcohol. You might be tempted to cover up discolored nails with polish, but don't. Your nail bed can't "breathe," which keeps fungus from going away.