What Are the Signs of a Fungal Infection under My Fingernail, and How Is It Treated?

A fungal infection under your fingernail, also known as onychomycosis, usually shows up with noticeable changes in the nail. You might see that the nail becomes yellow, white, or otherwise discolored. It might also get thicker, brittle, or even start to crumble. Sometimes, the nail might lift slightly from the nail bed because the infection affects its adhesion. To treat this, doctors often recommend starting with topical antifungal treatments such as creams, lacquers, or solutions that you apply directly to the nail. These work best on mild or moderate infections. However, if the infection is more severe or long-lasting, oral antifungal medications might be prescribed to fight the fungus from inside out. Keeping your nails clean and dry is important since fungi thrive in damp environments. It's a good idea to consult with a healthcare provider for an accurate diagnosis and appropriate treatment plan.