White lines on nails, or leukonychia, are often harmless, resulting from minor injuries. However, specific patterns like Muehrcke's or Mees' lines may indicate underlying health issues such as kidney ...

If you keep noticing white marks on your finger and toenails, it could be a fungal infection, a nutritional deficieny, or ...

(NEXSTAR) – What started out as a “tiny little brown line” on one woman’s fingernail led to a rare, potentially life-threatening medical condition, one that she’s now trying to help others catch early ...

(Gray News) - A brown line on a mother’s fingernail turned out to be a rare form of melanoma, according to the Cleveland Clinic. Lauren Koltcz, 45, said she noticed a brown streak on her thumbnail one ...