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A member asked:
A year ago i found a brown line in my thumb finger nail. it was almost transparent and now it has become darker. melanoma?
A doctor has provided 1 answer
Can't diagnose: Dark lines in black people over age 20 is usually normal. Black stripes down one nail could be a subungual hematoma. Red or brown streaks could be splinter hemorrhages. However, Melanoma can sometimes present as dark stripes on a nail.
Answered 1/14/2020
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