Your Toenails Know More Than You Do: The Hidden Health Clues Below the Surface

The most frequent cause of abnormal toenails is a fungal infection, medically known as onychomycosis. This condition typically begins as a small white or yellow spot under the tip of the nail. As the infection progresses, the nail becomes noticeably thick, discolored (often yellow or brown), and brittle, making it crumbly around the edges and difficult to trim.