What started out as a "tiny little brown line" on one woman's fingernail led to a rare, potentially life-threatening medical ...

5. Do you see thin red or brown lines? They’re called splinter hemorrhages. They usually come from trauma to your nails or a fungal infection. They can also be from psoriasis, melanoma ...

Learn the most common causes of white spots on nails, a condition known as leukonychia. Plus, experts explain how to treat ...

Nail ridges are grooves or raised lines that form on the nail plate and may run horizontally or vertically. They can vary in severity, from barely noticeable to quite pronounced. While some ridges ...