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What Do Black Nails Mean? [Solved]

June 29, 2022. A black fingernail is known as a subungual hematoma. It is caused by a build-up of blood under the fingernail. This usually results from an impact or trauma to the finger which can cause considerable pain. In most cases, ice and ibuprofen are sufficient to treat it.

What causes vertical black lines on fingernails? - Dr. Aruna Prasad

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Subungual Melanoma: What You Need to Know

The Doctors share what to look for with a subungual melanoma, which Miss Illinois USA 2018 Karolina Jasko discovered she had …

How To Cut Black Nails | Locating The Vein

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