Add Yahoo as a preferred source to see more of our stories on Google. This summer, Charmaine Sherlock noticed a thin black line under her nail of her left thumb — what looked like a splinter growing ...

Dr. Lindsey Zubritsky, a board-certified dermatologist based in Mississippi, is “begging” her 1.4 million TikTok followers to check their nails for a vertical line, which could indicate a subungual ...

Your nails might look clean, but the space beneath them is a tiny ecosystem—one that collects more bacteria than most people realize. From keyboards to grocery carts to your phone screen, your hands ...

Even after handwashing, bacteria often remain under the nails. They’re bold and glamorous, but beneath them lie bacteria and fungi that could harm your health. According to Jeffrey Kaplan, a biology ...