What Does A Dark Line On Your Fingernail Mean

This fingernail condition includes black lines on the nails nail discoloration and or excessive pigmentation.

It is most common in those who are older and dark skinned. A woman has shared a warning in which she claims that finding a black line down your nail could be a sign of cancer. Ridges in fingernails that run side to side are less common and might give you more pause. If the stripe is very dark if the border of the stripe is blurred.

Healthy fingernails are smooth uniform in color and. They indicate something caused the nail to stop growing temporarily. Sometimes changes in fingernail color are no biggie the result of a minor injury. Melanoma under a fingernail is known as subungual melanoma.

They arise because there is a temporary stop in nail growth in the proximal nail matrix where the fingernail is made she says. If i had hit or crushed my nails off of something surely i would remember. More seriously a black line or lines on the nails can indicate the presence of melanoma a dangerous form of skin cancer. Also known as beau s lines they could signal disease or just be a remnant of an old injury says dr.

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There are also signs that the stripe is more than an under the nail bruise including. Black line on the nail a narrow black line that has formed vertically underneath your nail is called a splinter hemorrhage. But not so fast. It occurs for a variety of reasons and may be harmless or a sign of a.

Deep horizontal ridges or depressions known as beau s lines are more alarming. The most common nails to see this dark stripe under is the thumb big toe and index finger. It may be due to certain medications underlying medical conditions trauma or injury to your nail bed radiation therapy uv light exposure or pregnancy. I have horizontal lines on my nails now.

Other times they signal a more serious issue melanoma. Triggers can include high fever chemotherapy.