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A member asked:
Hello, i am an asian girl with fair skin and i have the vertical black lines on my fingernails and toenails. what does this mean? thanks.
6 doctors weighed in across 2 answers
Chemical reaction: Vertical lines in bot finger and toenails could be due to some chemical that was ingested.Horizontal lines are more common and again caused by a drug or something ingested.
Answered 11/28/2017
5.8k views
Unsure: Black stripes down 1 nail may be subungual hematoma. Red or brown streaks may be splinter hemorrhages. Brown/black lines from nail plate to tip are often seen in people with dark skin & are normal. Subungual Melanoma can cause nail ridges & dark colors of cuticle. It most often effects the thumbs or big toes. Dark lines may be due to other illnesses. Get checked out when in doubt.
Answered 10/31/2018
255 views
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