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 ...

But the lines were still there. Kennedy News & Media Tagliamonte went to a dermatologist, who told her the “discoloration at the base of my thumb nail ... this black line in my nail was coming ...

Michelle Tagliamonte, 58, spotted faint black lines on the nail of her her right thumb while getting a manicure in September last year. But when the marks hadn't grown out by her next nail session ...

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 thumb, ...

Dark purple-blue nail polish is the most intense yet when it comes to following the periwinkle nail trend. Suspended between ...

"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.

"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 ...

this black line in my nail was coming from inside the growth plate down from inside my nail.” “The melanoma was in the growth plate [in my thumb] down to my first knuckle,” explains Tagliamonte.

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