These black lines on fingernails may look like bruising or internal coloring - not like you just accidentally created an edgy ...

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

From the mysterious white flecks that sometimes appear on nails to unusual ridging or changes in thickness, what do these ...

Longitudinal ridging, which is clinically known as onychorrhexis, occurs on the nails and may appear as vertical striations or lines that originate from the base of the fingernail and continue to ...

A black line on the nail could be normal, such as when it is just a color variation. Other possible causes range from injury to certain medications for conditions like human immunodeficiency virus ...

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 ...

As we age, we often become more attuned to the messages our bodies send us. Aches and pains may prompt us to slow down or ...

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

But the lines were still there. Related: Mom's Stage 4 Melanoma Spread from Fingernail to Brain, Says She 'Begged for' Scans That Could Have Caught It Sooner Tagliamonte went to a dermatologist ...

But the lines were still there. Kennedy News & Media Michelle Tagliamonte, gives a thumbs-up following surgery for cancer. Related: Mom's Stage 4 Melanoma Spread from Fingernail to Brain, Says She ...