A black line on your nail (medically known as melanonychia) causes a streak of dark pigmentation that runs along the nail bed ...

Have you ever taken off your nail polish only to notice a dark line on the nail running vertically down your finger? These ...

Michelle Tagliamonte, 58, was getting a manicure when she noticed the black lines on her thumb, which signaled the start of a fast-spreading cancer.

An Ohio mother-of-two made a crucial health discovery after spotting black lines on her thumb during a routine nail appointment, as reported by Daily Mail. Ohio woman noticed black lines on her ...

There's nothing that quite beats the simple yet stunning presence of French tip nails. The clean lines and effortlessly ...

Fingernails and toenails grow slowly, so it may take some time for the white spots or lines to disappear entirely. Fingernails typically take 6 months or more to grow out fully. Toenails can take ...

While some harmless conditions may also cause nail discoloration, persistent dark lines should always be checked by a doctor to rule out serious concerns. Pitted or dented nails Small dents or ...

"Weather and fashion influence how people get their nails done," says Nyugen. Dark green nails feel appropriate for fall, but you can wear them for any season. "I painted these dark green nails ...

Dark purple-blue nail polish is the most intense yet when it comes to following the periwinkle nail trend. Suspended between deep blue and deep purple, the polish looks equally striking on short, ...

"The contrast between the dark base and polish creates a beautiful ... "As a result, a distinctive line or lines on the nail resembles the shape and look of a cat eye," says Haye.

The black lines (left) on Michelle Tagliamonte's thumb were a sign of cancer.