"Known as splinter hemorrhages, these are small black streaks that appear ... Most of the time, thin, vertical black lines ...

A black line on your nail (medically known ... Your healthcare may also order additional tests, such as: Nail culture: ...

(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 ...

(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 ...