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A member asked:
I've got a vertical dark line on both my thumbs' fingernails and one much more lighter on my forefinger's nail . what could it mean?
A doctor has provided 1 answer
Nail lines : Multiple nail lines are typically normal. Rarely it may be do to an underlying mole or rarely melanoma skin cancer. Usually only one nail is involved in cancerous cases. It's best to ask your dermatologist.
Answered 3/9/2017
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