A 49-year-old female asked:
i get thin, short, black vertical lines beneath my fingernails that grow out. months will pass and no lines and then they appear again. what are they?
2 doctor answers
Dr. Ed Friedlander answered
44 years experience Pathology
Splinter bleeds?: If you're describing splinter hemorrhages (there many web photos for you to compare), you'd do well to show them to your physician, though this isn't the classic presentation that raises concerns. I always have splinters just from cutting my nails super-short. You may be describing something else, and again i'd urge you to have them seen.
Answered on May 31, 2018
1
1 thank
Dr. Michael Tomeo answered
38 years experience Dermatology
Nail anomalies : Such discolorations can be caused by intermittent trauma to the nail unit from biting or banging , etc. Other causes could be low-grade infection or inflammation.
Answered on May 31, 2018
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1 thank
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