A member asked:

Why the the big toe nail turn black?

10 doctors weighed in across 2 answers

Black nail: The most common cause of a. Lack nail is bleeding into the nail bed from trauma. Fungus can do it and in rare instances other disorders.

Answered 1/14/2016

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Dried blood: almost always it is because there was an injury causing bleeding under the nail. The dried blood will take months to grow out, the nail may fall off

Answered 5/29/2016

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