Why Is a New Nail Growing Under the Old One? Causes, Symptoms & What to Do
Have you noticed a second nail forming underneath your current toenail or fingernail? While it can be alarming at first, this phenomenon is more common than you might think. Whether it’s your big toe or index finger, the appearance of a new nail growing under the old one may be your body’s way of responding to injury, infection, or a nail disorder. In this guide, we’ll explore why this happens, what it might mean for your nail health, and how to handle it—especially if pain is involved. What Does It Mean When a New Nail Grows Under the Old One?...