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A 41-year-old male asked:

Why do i have a black line on my right big toenail from the top to the bottom of the toenail?

1 doctor answer1 doctor weighed in
Dr. Jeffrey Hoffman
Family Medicine 33 years experience
Recommend consult: consider seeing a dermatologist about this to be sure this is not anything more problematic

Similar questions

A female asked:

Why is there a vertical black line on my right big toenail?

3 doctor answers6 doctors weighed in
Dr. Jonathan Posner
Podiatry 28 years experience
Trauma: A dark line that runs vertically down the nail can indicate that you might have traumatized the nail matrix(the area where the nail starts growing). Other possibilities are fungus, melanoma and genetics. See your doc for a full evaluation.
Last updated Jan 20, 2018

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