Black line on the nail: Causes, treatments, and pictures

A look at a black line on the nail, a common change that can happen due to a range of causes. Included is detail on the diagnosis and when to see a doctor.

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Subungual Melanoma (Nail Melanoma): Symptoms and Treatment

Woman shares warning that 'black line on nail' could be sign of

Onychoschizia: Causes, Symptoms, and Treatment - Skinsight

Green nail syndrome - Wikipedia

What is this mass of red/brown painful lines under my fingernail that appeared after receiving a deep splinter under my nail? - Quora

Ridges in Fingernails: Causes, Symptoms, Treatment, Prevention

Ridges in Nails: Causes, Treatments and Prevention

I have a black mark on the top of my finger. What is it? - Quora