What are the symptoms of a fungal nail infection, and how is it treated?

When a nail is affected by a fungal infection, you may see changes in its color and texture. The nail can become yellow, brown, or even white. It often grows thicker than normal and may feel different to touch—sometimes it becomes brittle or crumbly. In some cases, the nail might even lift away from the nail bed. You might notice an unusual smell too. All of these are clear signs that the fungus has taken hold.

To treat a fungal nail infection, doctors often start with topical treatments, which can include a medicated nail polish or cream that you apply directly to the nail. These treatments can help stop the fungus from growing.

For tougher infections, your doctor might prescribe oral antifungal medicine that you take as tablets. Treatment can take several months because the infected nail needs to be replaced by new, healthy growth. If you're experiencing any of these symptoms and want to better understand what might be causing them, try our free AI symptom checker to get personalized insights in minutes. It is important to keep your nails clean and dry and follow your doctor's advice to help clear the infection.