Melanonychia: What It Is, Causes, and More

Melanonychia occurs when you have brown or black lines in your nails. Learn about melanonychia, including the types and causes.
Do you have black or brown lines on your nail? This video explains what melanonychia is, what causes it, and how it can be treated.

Longitudinal melanonychia in a male patient with onychophagia

Is it normal to have dark nails and light skin? What causes this

Melanonychia: What It Is, Causes, and More

Dilemma of Nail Pigmentation

Significance of age for the development of longitudinal

Transverse Melanonychia and Palmar Hyperpigmentation Secondary to

Melanonychia: What It Is, Causes, and More

What are some possible causes of black nail beds and how can they

Melanonychia: Etiology, Diagnosis, and Treatment

What causes the appearance of dark lines on fingernails? - Poe

I have had this weird mark on my finger for 2 years. What is this

What could be the cause of a newly appearing straight black line

What is the cause of dark nails on fingers? - Quora

Is it normal to have dark nails and light skin? What causes this

A comprehensive approach to evaluate melanonychia