A 35-year-old male asked:
i have had a section of my fingernail that can present a dark line, which looks like a splinter or blood blister. it runs vertically from the base of the nail to the tip. the nail itself splits at the tip along the same line.
1 doctor answer
Dr. Brooks Mick answered
55 years experience Internal Medicine
Serious or not?: One can get benign "splinter hemorrhages" from many causes, but a persistent dark brown or black line can mean a type of skin cancer called melanoma. This should be looked at by a dermatologist.
Answered on Apr 1, 2020
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